ZINE EL ABIDINE Rahmouni

Sebai Ahlam , Benraya Maroua

L'inspection et le contrôle de la construction avec les outils de la digitalisation

Maache Aymen , Gacem Zakaria

Formulation et caractérisation des mortiers autoplaçants à base des ciments ternaires aux hautes températures

Noui Abdelmoumen , Saoudi Abdelbasset

Valorisation des sables recyclés dans la formulation des mortiers contenant des ajouts minéraux

Megdoud Yasmina

L'effet combiné du kaolin et des déchets de céramique dans la formulation des mortiers

Kouadri Mohamed El Amine , El Bahi Louai

L'effet de l'utilisation des résidus métalliques dans la formulation du béton ordinaire à l'état frais et durcis

Boudia Sara , Chebicheb Khaoula

Effet de l'incorporation et du dosage des fibres sur les caractéristiques du mortier autoplaçant à base de poudre de verre

FAID Ahlam , BOURAS Ahlam

L’effet de l’utilisation des résidus (les copeaux plastiques) dans la formulation des bétons autoplaçants à l’état frais et durcis.

Djiab Nour El Houda , Haffaf Fayza

L’effet de l’utilisation des résidus (les copeaux métalliques) dans la formulation des bétons autoplaçants à l’état frais et durcis.

Bouguerra Anwar , Bahache fatma

Effet de l’incorporation de l’entraineur d'air sur les caractéristiques du mortier à base de la poudre de verre et fibres métalliques.

DJEGHAM Somia , SEHNOUNE Chahra

L`effet combiné de l`incorporation des déchets industriels et du mode de conservation dans la formulation des mortiers.

Refice Sara , Zerrouki Imane

L'influence de sable substitué par du brique sur l'évolution des propriétés physiques et mécaniques des mortiers soumis à de hautes températures.

Bouderbala Fatma , Abdelkebir Nedjoua

Corrélation entre les essais destructifs (ET) et non destructifs (NDT) du béton au céramique exposée haute température

Soltani Ayyoub

Caractérisation mécanique d'un mortier allégé à base de noyau d’olive et de sable issues de la région du Hodna.

Amroune Souad , Amroune Soundous

L'exploitation du scanner 3D dans le suivi et le contrôle des ouvrages.

Dilmi Afifa , Lakehal Rachid

La numérisation 3D et son exploitation dans la modélisation de l'information du bâtiment.

Zarroug Majda

Les différents livrables du levé topographique avec le scanner 3D.

Medjahed Manal , Korichi Imene

Contrôle technique et monitoring des sites hydraulique via le scanner 3D.

BERBICHE Younes , ALLAL Meftah

Propriétés et durabilité des pâtes de laitier cristallin dans les milieux agressifs

SAADAOUI Ali , MANSOUR Achraf

Comportement des mortiers à base de déchets d'aluminium et Metakaolin.

DJERAD Karima , CHOUYA Ahlam

Estimation de la durabilité des bétons autoplaçant (BAP) fibrés par les vitesses ultrasoniques

ROUINA Mouad Abdeldjalil

Propriétés des bétons autoplaçants contenant des ajouts minéraux.

ACHOUR Mohamed , HERIZI Boudjemaa

Effet combiné des déchets de brique et de céramique sur le comportement du mortier

ZAGAAR Hedjila , ZAAZOUA Kenza

Effet des déchets de céramique et poudre de marbre, sur les propriétés physicomécaniques du Mortier.

Rahmouni Imene , Chelbab Nassima

L'interopérabilité entre la maquette numérique et les dimensions du processus BIM

Bentoumi Moustafa

Valorisation de trois types de sable issue de la région du Hodna pour l’élaboration du Bétons Polymères à base de résine polyester.

Gharbi Faiza , Fali Malika

Evaluation de la qualité des bétons autoplaçant (BAP) exposés à haute température aux moyens des essais non-destructifs (END) et essais direct

Mokrani Hichem , Souici Mounir

Corrélation aux moyens des essais non destructifs (END) et essai direct (ED) d’un béton à base de matériaux locaux

Habeta Fouzia , Kaddour Imene

L’utilisation de la brique recyclée et de la céramique dans la formulation des mortiers

Terki Tahar , Laichi Amar

Contribution à l'étude rhéologique d'un béton à hautes performances (BHP) local

Benhamida Rafiq , Hamrit Abdennour

Effet de l’incorporation de l’entraineur d’air sur les caractéristiques du mortier à base de déchets d’aluminium

Bouzidi Djamel

Les dimensions du BIM et leurs influences sur le projet de génie civil

BELOUADAH Messaouda

Effet de la nature des additions minérales sur le comportement du béton à l'état frais et à l'état durci à base des matériaux locaux et soumis à haute température

DJEBRI Noura

Formulation caractérisation et durabilité d’un béton autoplaçant fibré à base de matériaux locaux exposés aux hautes températures

TEBBAL Nadia

Effet de la nature des granulats sur les propriétés physico-mécaniques et la durabilité d’un béton à haute performance.

Over the past decade, many types of waste have been exploited as feedstocks in different industries. Recycled plastics are among the waste sought for several civil engineering applications. In this work, various plastic-bonded sand composites based on polypropylene waste and silica sand were produced to serve as building materials in many construction applications. Many tests and analysis were carried out in this investigation. First of all, two initial used compounds (waste PP and various silica sand) were analyzed by using ATR-FTIR, XRF, and grain size distribution. In the second time, the different plastic-bonded sand composites were analyzed by using ATR-FTIR to assess their composition. On the other hand, mechanical, and physical tests such as three-point flexural strength, compressive strength, water absorption, and optical observation were applied on different produced composite samples, then the results were examined and analyzed. The results showed that the developed composites exhibit commendable mechanical properties, especially flexural and compression resistance, and minimal water absorption. It is worth noting that the plastic-bonded sand containing Khobana sand showed the highest flexural and compressive strength at 11.56±0.36 and 26.19±0.27 MPa, respectively, along with the lowest water absorption rate of 0.46%. This study confirms its contribution to enhancing sustainability and promoting the principles of the circular economy

Citation

ZINE EL ABIDINE Rahmouni , , (2024-08-22), Manufacture and Characterization of Lightweight Sand-Plastic Composites Made of Plastic Waste and Sand: Effect of Sand Types, International Journal of Lightweight Materials and Manufacture, Vol:7, Issue:6, pages:1-17, Science Direct

In this investigation, novel cellulose fibers were acquired from the Bassia Indica plant to serve as a reinforcement source in composite materials. The morphological characteristics were studied using Scanning Electron Microscopy (SEM). The surface chemistry, crystallinity, and functional groups of Bassia Indica fibers were analyzed using X-ray Diffraction (XRD), Energy Dispersive X-ray (EDX) spectroscopy, and Attenuated Total Reflectance-Fourier Transform Infrared spectroscopy (ATR-FTIR), which assess the crystal structure, elemental composition, and surface functional groups, respectively. The thermal behavior of Bassia Indica fibers were assessed through Thermogravimetric Analysis (TGA). Anatomical techniques demonstrated the abundant presence of fibroblasts in the fibers. The presence of lignocellulosic fiber (lignin, cellulose and hemicellulose) was confirmed through ATR-FTIR analysis. The analysis of physical properties unveiled a fiber density of 1.065 ± 0.025 g/cm³ and a diameter of 145.58 ± 7.89 μm. The crystalline size of Bassia Indica fibers reached 2.23 nm, with a crystallinity index of 40.12 %, and an activation energy of 93.78 kJ/mol, TGA research revealed that Bassia Indica fibers are thermally stable up to 260.24 °C. Additionally, the fibers experienced maximum degradation at 321.23 °C. Weibull statistical analysis was performed using parameters 2 and 3 to calculate the observed dispersion in the experimental tensile results after analyzing the mechanical properties of the fibers possessing a tensile strength of 417.50 ± 7.08 MPa, Young's modulus of 17.46 ± 1.55 GPa, stress at failure of 1.17 ± 0.02 % and interfacial shear strength of 6.99 ± 1.10 MPa. The results were additionally compared to how they were stated in the relevant sources. Bassia Indica fibers can be considered a viable choice for reinforcing lightweight bio-composites.

Citation

ZINE EL ABIDINE Rahmouni , , (2024-08-03), Investigation of mechanical and physico-chemical properties of new natural fiber extracted from Bassia indica plant for reinforcement of lightweight bio-composites, Heliyon, Vol:10, Issue:15, pages:1-17, Heliyon

Disposal of waste glass derived from bottle or packaging glass, flat glass, domestic glass is one of the major environmental defies. Moreover, the remnants of bricks resulting from the remnants of buildings are also considered an important factor in polluting the environment due to the difficulty of filling or getting rid it. The aim of this study is to valorize these wastes through chemical activation to be an environmentally friendly material. The Microstructure, compressive strength, setting time, drying shrinkage, water absorption of different pastes produced by clear glass (CG), green glass (GG) and brick waste (BP) activated were tested and recorded after curing for 3, 7, 28 and 365 days. Five samples of pastes were mixed in proportions represented by: 100% GP (GP), 100% GGP (GGP), 100% BP (BP), 90% GP + 10% BP (GPB) and 90% GGP + 10% BP (GGPB). Various parameters considered in this study include sodium hydroxide concentrations (10 mol/l); 0.4 as alkaline liquid to binder ratio; 2.5 as sodium silicate to sodium hydroxide ratio and cured at 60°C for 24 hours. Experimental results revealed that the addition of 10% of BP resulted in an increased strength performance of geopolymer paste especially with GGPB compared to GGP in 365 days. In addition, the 10% amount of BP increases the absorption and shrinkage rate of geopolymer pastes (GPB and GGPB) by reducing the setting time. SEM results revealed that the addition of BP and GP resulted in a dense structure.

Citation

ZINE EL ABIDINE Rahmouni , , (2024-06-05), Microstructure and mechanical properties of ternary pastes activated with multi-colors glass and brick wastes, Advances in Concrete Construction, Vol:17, Issue:3, pages:167-177, Techno Press

The search for an alternative to cement has become an environmental and strategic necessity to reduce the effects of global warming and preserve the energy capacity of energy-importing and energy-exporting countries alike. Geopolymer materials are classified as green materials and may be the alternative solution proposed at the present time due to their advantages. The results of research and studies have shown that these geopolymer materials possess superior mechanical and physical properties, including high early strength, good chemical resistance, low shrinkage, and good thermal resistance. The rise in temperatures in recent years and the global warming scenario has led to an increase in demand for heat-insulating materials, especially in the construction sector. This review includes, based on previous research, previous knowledge of more about the basics of these geopolymer materials the raw materials that go into preparing these compounds and the factors affecting their properties. The good thermal performance of these compounds is considered important and vital to exploit in the production of efficient insulating materials, and it may be a sustainable solution in re-exploiting mineral waste in order to preserve natural resources

Citation

ZINE EL ABIDINE Rahmouni , ,(2023-12-18), A bibliographic study on geopolymers and the valorization of mining waste,The 1st Scientific Days on Materials and Their Applications (SDMA’2023),Université de Biskra, Algérie

this paper reviews the use of the waste product (ceramic industry) for construction purpose. Now a days they are rapid growth in urban andindustrial is more and the demand is being increased day by day. The waste generated from ceramic industry is usedas a partial replacement in cement. To eradicate the demand of construction material cement is being replaced in our project as ceramıc waste accordingly in the range of 0%, 5%, 10%, 20%, and 30% by weight of cement for mix. Self-compacting mortar mixtures were produced, tested and compared in terms of compressive, flexural and split tensile strength with the conventional Self-compacting mortar. These tests were carried out toevaluate the mechanical properties for the test results of 7, 14, 28 days for compressive strength, flexural Strength and split tensile strength. For this purpose, design parameters like water to binder ratio (w/b), water to cement ratio (W/C), superplasticizer dosage (SP) (kg/m3) and replacement percentage of ceramic waste are studied on the slump flow. It is observed that with respect to different grades of SCC, designed parameters affects the fresh and strength properties of SCC.

Citation

ZINE EL ABIDINE Rahmouni , ,(2023-12-17), Application of waste ceramic powder as a cement replacement in Self-compacting mortar,2. BİLSEL INTERNATIONAL TRUVA SCIENTIFIC RESEARCHES AND INNOVATION CONGRESS,ÇANAKKALE / TÜRKİYE

A simplified computational procedure for determining the optimal design of special moment resisting steel connections is proposed. The connection, recently patented by the authors, is the so-called Limited Resistance Plastic Device (LRPD); it appertains to the class of the Reduced Beam Sections (RBS) which mainly constitute appropriate beam portions devoted to receiving plastic deformations, but it also possesses additional and innovative features related with its resistance and stiffness. The optimal design of the LRPD usually requires the solution of a strongly nonlinear minimum volume problem. On the grounds of the known expected LRPD mechanical features, a simplified computational procedure is defined. Reference will be made to the device applied to I-shaped steel beam elements subjected to a plane force system. Some numerical applications are presented, regarding the comparison between the results obtained by means of the proposed simplified strategy and those obtained by the solution to the optimal design problem. Furthermore, a larger application devoted to a plane frame proves the reliability of the devices as receptors of plastic deformations.

Citation

ZINE EL ABIDINE Rahmouni , , (2023-10-24), Effect of Aluminum Waste on Mortar Thermo-Mechanical Behavior, International Review of Civil Engineering (IRECE), Vol:14, Issue:5, pages:265-271, PRAISE WORTHY PRIZE HOMEPAGE

Comprehending the mechanical characteristics of concrete is paramount for its efficient deployment in construction. This investigation endeavors to predict these properties utilizing equivalent mortar, furthering previous inquiries on the topic. Literature suggests a viable approach to create concrete through a method employing both natural and crushed aggregates. This technique considers the corresponding mortar, amalgamated with crushed (SC) and dune sand (SD), as a novel mortar. Implementing this method could curtail the consumption of natural resources while conserving the mechanical attributes in both fresh (flow) and hardened states (strength and durability). This approach aims to anticipate the mechanical performance of concretes formulated from equivalent mortar data. Five mixtures were constituted to discern the optimal blend from a binary amalgamation of crushed coarse aggregates (30% fraction 3/8 and 70% fraction of 8/15) sized 3.8mm and 8.15mm, alongside five mixed sand percentages: (30% SC+70% SD), (40% SC+60% SD), (50% SC+50% SD), (60% SC+40% SD), and (70% SC+30% SD). The application of super plasticizer was investigated, and the compressive strength function of coarse aggregate was ascertained at intervals of 7, 14, and 28 days. The mechanical strength was determined at the 28-day mark. The empirical study indicates that density attains its zenith when a 40% mortar is incorporated into the concrete matrix. Conversely, with a 50% SC composition within the mixed sand, the mechanical strengths achieve acceptable values with moderate CS dosages. Specification tests reveal that incorporating 50% to 70% mortar into the concrete matrix can yield highquality concrete

Citation

ZINE EL ABIDINE Rahmouni , , (2023-10-05), Predicting Mechanical Properties of Concrete Using Equivalent Mortar: A Comparative Study, Annales de chimie - Sciences des matériaux, Vol:47, Issue:5, pages:266-271, IIETA

The objective of this research work is to study and better understand the behavior at high temperatures of fiber concretes and the effect of the evolution of the temperature on their mechanical behavior, by evaluation of the loss of residual mass, and the resistance residual in compression and tension. The concretes are subjected to different heating-cooling cycles up to a maximum temperature of 300°C ; 500°C and 700°C at the age of 28 days. This study showed that the residual strength of fiber-reinforced concrete subjected to a very high temperature decreased compared to concrete (not subjected to a very high temperature).

Citation

ZINE EL ABIDINE Rahmouni , ,(2023-07-08), EXPERIMENTAL STUDY OF FIBER-REINFORCED CONCRETE SUBJECTED TO TEMPERATURES OF 500°C AND 700°C,3rd INTERNATIONAL CONGRESS ON CONTEMPORARY SCIENTIFIC RESEARCH,Adana, Türkiye

The purpose of this study is to recover mineral residues as an additive in cement-based building materials. It is part of a sustainable development approach. The use of recovered and recyclable industrial residues in partial replacement of Portland cement reduces greenhouse gas emissions and results in the manufacture of cement with a lower environmental impact. Using various experimental techniques, particular attention is paid to the behaviour of the ceramic powder finely crushed and chemically activated associated with Portland cement. This study confirms the improvement in the physicochemical and mechanical properties of cements with the addition of ceramic powder, which augurs well for its use as a cement . Keywords: Sanitary ceramic waste; Fillers, Mortars; Properties

Citation

ZINE EL ABIDINE Rahmouni , ,(2023), Effect of ceramic addition on the properties of mortars,1. BİLSEL INTERNATIONAL AHLAT SCIENTIFIC RESEARCHES CONGRESS,BİTLİS/TURKEY

This study examines the mechanical effects of the addition of transparent glass in the form of waste glass powder on the mechanical properties of concrete in aggressive environments.Glass is used as an additive after conversion to fine powder and mixed with cement at 0% , 5% and 10% For the construction of concrete with additives and then poured into molds. And then treated in fresh fresh water, salt solution where the salt is 5% sodium chloride and finally in MgSO4 solution at 5% concentration for 7, 14 and 28 days, then mechanical tests are performed when the test used in this research is compressive strength and porosity. It was observed that there were differences in compressive strength when immersed in different solvents. Samples immersed in water have higher resistance than those immersed in sodium chloride MgSO4 solution and increase with immersion time. The results show that the addition of glass powder improves the flow of concrete, also it further consolidates the cementitious matrix which makes it difficult for aggressive compounds to penetrate into the concrete. Keywords: glass, addition, concrete, durability, aggressive environment,Porosity, Compressive Strength

Citation

ZINE EL ABIDINE Rahmouni , ,(2023), Durability in aggressive environments of concrete incorporating glass powder,3. INTERNATIONAL MEDITERRANEAN SCIENTIFIC RESEARCH AND INNOVATION CONGRESS,ANTALYA / TURKEY

This paper investigated the effects of brick dust and metal fiber on the mechanical and physical properties of cement mortars exposed to high temperatures experimentally and statistically. For this purpose, the mixes containing marble dust (0%, 5%, and 10% by volume) and metal fiber (0 kg/m 3 , 1 kg/m, 2 kg/m 3 , 5 kg/m 3 ) were prepared. The cement mortars' compressive strength and porosity value were determined after exposure to high temperatures (300, 500, and 700 C). The percentage of brick dust, amount of metal fiber, and degree of temperature were changed to explore their effects on specimens' compressive strength and porosity values. Finally, experimental findings were compared with statistical results, and a good agreement between them was achieved. Keywords: brick Dust, Metal Fiber, Cement Mortar,Temperature, Porosity, Compressive Strength

Citation

ZINE EL ABIDINE Rahmouni , ,(2023), PERFORMANCE EVALUATION OF CEMENT MORTARS CONTAINING BRICK DUST AND METAL FIBER EXPOSED TO A HIGH TEMPERATURE,9th INTERNATIONAL BLACK SEA COASTLINE COUNTRIES SCIENTIFIC RESEARCH CONFERENCE,Ankara, Turkiye

In the construction field, the current research is oriented to the recovery of materials in general, is especially local materials to fight both the soaring prices that knows the way and at the same time ensured the balance nature by solving the problem of pollution that allows the survival of several species that are the major links to the balance of nature. The objective of our work is to lighten the micro-concrete by adding different percentages of polystyrene, and to improve the fluidity and the mechanical strength of the micro-concrete by the incorporation of adjuvant. The results obtained from this research confirm that the rate of 30% of polystyrene gives the most alleviation, 1.5% of adjuvant gives good fluidity and increases the mechanical strength.

Citation

ZINE EL ABIDINE Rahmouni , ,(2023), Micro concrete admixed with white cement with polystyrene,11 th INTERNATIONAL SCIENTIFIC RESEARCHES CONFERENCE,ADANA, TURKEY

Achieving environmentally friendly compounds with high mechanical resistance, lower density, and high thermal resistance is a topic of research for most of those interested in this field. Geopolymers are threedimensional amorphous materials made of aluminosilicates in a normal environment or at high temperatures through alkaline activation of aluminosilicate materials. This activation, along with Add a chemical foaming agent (aluminum powder, hydrogen peroxide, sodium oleate...) led to the synthesis of inorganic foam. Geopolymer foams are high temperature resistant materials characterized by mechanical and chemical stability and low post-foaming shrinkage. Pore size is directly related to changing the concentration of the foaming agent, and studies have shown that, by tracking CT images, up to 24% open porosity can be achieved without significantly affecting other properties. addition to geopolymers enjoying these advantages, we find some studies interested in obtaining other advantages, including adding another factor that (PCM).Thermal properties of geopolymer concrete (GPC) are enhanced by adding phase change material (PCM) capsules. Thermal and structural tests were conducted to investigate the effects of capsules on the properties of produced GPC. The produced thermally enhanced GPC can reduce heat transmission to indoors in the hot climates and its compressive strength is acceptable for nonloadbearing wall components.

Citation

ZINE EL ABIDINE Rahmouni , ,(2023), A bibliographic study on the effectiveness of geopolymers in the field of thermal insulation,3 rd International Conference on Innovative Academic Studies,Konya, Turkey

Sludge valorization, also called sludge management, is an important field in the treatment of wastewater and solid waste worldwide. Sludge is the solid byproduct generated during the treatment of wastewater in wastewater treatment plants. They often contain organic matter, mineral elements and other contaminants, making them potentially harmful to the environment if not properly managed. However, there are many ways to recover sludge and use it beneficially rather than simply disposing of it. The areas of sludge recovery are: Composting, Agricultural use, Energy production, Biogas production and Production of construction materials. Using sludge to make bricks has many environmental benefits, including reducing waste, reducing demand for natural resources, decreasing greenhouse gas emissions, and creating sustainable building products. However, it is essential to comply with local and national environmental regulations and implement strict quality controls to ensure the safety and quality of bricks made from sludge.

Citation

ZINE EL ABIDINE Rahmouni , ,(2023), Improving sludge management and transforming waste into sustainable resources,3rd International Conference on Innovative Academic Studies,Konya, Turkey.

The use of sewage sludge ash, also known as sewage sludge incineration ash (SSIA), as a construction material has gained attention in recent years. This study aims to investigate the effect of SSIA on the durability of equivalent mortar exposed to high temperatures. The exposure of mortar containing SSIA to high temperatures can have various effects on its durability. Some of the potential effects include a reduction in mechanical strength, degradation of the microstructure, weight loss, and the formation of new mineral phases. However, these effects can vary depending on the composition of the SSIA and other components of the mortar, as well as the specific conditions of high-temperature exposure. Further experimental studies are needed to provide more accurate evaluations of the impact of SSIA on the durability of equivalent mortar exposed to high temperatures.

Citation

ZINE EL ABIDINE Rahmouni , ,(2023), Assessing the Durability of Mortar Incorporating Sewage Sludge Ash under High-Temperature Exposure,3rd International Conference on Innovative Academic Studies,Konya, Turkey.

Geopolymers belong to the aluminosilicate family, essentially composed of a raw material that may be natural, a co-product or an industrial by-product such as blast-furnace slag, fly ash and metakaolin, or another material that essentially contains silica (SiO2) and alumina (Al2O3) and an alkaline solution. The use of geopolymers as cementitious materials is currently growing due to their excellent properties and efficiencies, such as low CO2 emission, high compressive strength, low permeability, enhanced durability, thermal resistance and excellent stability in acidic and alkaline environments. Geopolymers are obtained by alkaline activation, often based on sodium or potassium silicate. Many studies have shown that aluminosilicate materials are activated depending on the type of material used .Alkali-activated mortars were found to have higher compressive strength than cement mortars. Alkali-activated materials represent one of the alternatives available that could replace PC in terms of economy, ecology, mechanical performance and durability. Heat treatment has an influence on the reactivity of materials, and studies show that mortars based on uncalcined (raw) materials give lower strengths than control mortars based on 100% cement. Calcination changes the structure of the material to become amorphous, which improves the compressive strength of mortars, so thermal analysis has a positive influence on the compressive strength of mortars. The mechanical activation of materials containing a percentage of silica and/or alumina consists in increasing grain fineness (specific surface area) through advanced grinding. Heat treatment of raw materials shows significant effects on the mechanical behavior of synthesis product were this later enhance mechanical strength, But it considering more expensive then mechanical activation which more economical. However chemical activation has an interesting effect on the development of compressive strength, but is expensive and difficult to process in an aggressive environment.

Citation

ZINE EL ABIDINE Rahmouni , ,(2023), Different types of activation of supplementary cementing materials,3rd International Conference on Innovative Academic Studies,Konya, Turkey.

Geopolymerization is the chemical process that brings together all the reactions transforming solid rich in silica (Si) and alumina (Al), such as fly ash, blast furnace slag or clay, an alkaline activator, such as sodium hydroxide (NaOh) or potassium hydroxide (Koh), to form an alkaline solution, under different experimental conditions, into aluminosilicate gel. This chemical reaction, called polymerization, enables the elements present in the raw materials to bind together to form a solid three-dimensional network, similar to that of Portland cement. This network gives geopolymeric materials high mechanical strength. This is an alternative to traditional methods of manufacturing materials such as Portland cement, which generate significant quantities of greenhouse gases (CO2) during production. The reaction mechanism for geopolymer formation comprises three stages: a dissolution/hydrolysis stage, a restructuring stage and a final polycondensation stage. Several parameters can influence the geopolymerization process, such as the alumino-silicate source (precursor type), particle texture and morphology, particle size and specific surface, alkaline activator type and concentration, water content, the silica content, as well as temperature, which has an effect not only on the reaction rate, but also on the microstructure and mechanical properties of the geopolymers, such as the texture of the final material, mechanical strength, homogeneity, porosity and thermal stability. Experimental studies and tests are often carried out to determine the appropriate temperature parameters for obtaining the desired properties of the geopolymer material.

Citation

ZINE EL ABIDINE Rahmouni , ,(2023), EFFECT OF TEMPERATURE ON GEOPOLYMERIZATION,3rd International Conference on Innovative Academic Studies,Konya, Turkey.

Abstract: Self-Compacting Concretes (SCCs) have brought promising insight into the concrete industry to generate environmental impact and reduce costs. the absence of SCC vibrations generates a significant reduction in noise pollution in urban areas, ease of implementation, possibility of concreting heavily reinforced areas or areas with complex geometry and obtaining better quality concrete on the one hand, reduction of working time on site, of personnel during installation and reduction of the costs of industrial processes, on the other hand. Metal chips resulting from the modification of metal parts obtained by turning present problems of environmental pollution and storage. The recycling of this waste in the construction industry is an adequate solution for the production of concrete and can improve some of its properties. An experimental study to study the properties of SCC containing metal shavings with the study of the properties of SCC in the fresh state: flow, L-box and sieve stability. Properties in the hardened state of concretes: compressive strength and ultrasonic pulse velocity. The metal waste in the form of shavings, incorporated in a dosage of 0.5% of concrete volume in the mixtures of SCCs produced, which makes it possible to evaluate the effect of the addition of metal shavings on the characteristics of SCCs in the state fresh and hardened and to recover metal waste, the results confirm the advantage of adding metal shavings in the fresh state the SCCs studied keep their characteristics of self-plasticity, in the hardened state the results show an improvement in the compressive strength of the SCCs studied. Keywords: self-compacting concrete, waste recovery, metallic shavings, rheological properties, mechanical properties

Citation

Noura DJEBRI , ZINE EL ABIDINE Rahmouni , , (2022-12-31), The Effect of the Use of Residues (Metallic Shavings) in the Formulation of Self-Compacting Concrete in Fresh and Hardened State, Annales de Chimie - Science des Matériaux, Vol:46, Issue:6, pages:301-306, IIETA

The combined use of silica fume (SF) and ceramic waste (CW) for the production of mortar is studied. Sand is replaced by 5%, 10%, 15% and 20% of CW while a fixed 5% percentage (% wt of cement) of SF is used. The results show that the best results are obtained by using silica fume and ceramic waste sand with 15% weight of sand and 5% wt of cement. With the addition of sand ceramic waste (SCW), the mortar compressive strength and density increase, while the porosity displays an opposite trend. The experimental analysis is complemented with theoretical considerations on the matrix strength and related improvements in mechanical behavior. It is shown that the agreement between the experimental values and the estimated values is good.

Citation

ZINE EL ABIDINE Rahmouni , Mekki MAZA , Nadia TEBBAL , Messaouda BELOUADAH , , (2022-06-14), On the Combination of Silica Fume and Ceramic Waste for the Sustainable Production of Mortar,, Fluid Dynamics & Materials Processing 2023, 19(5),, Vol:19, Issue:5, pages:1083-1090, Tech Science Press

This paper presents an experimental study on the influence of metal fibers on the mechanical behaviour of mortar with glass sand. Four mortar mixtures with glass filler and metals fibers are manufactured. The specimens were prepared with three percentages of glass sand (0%, 5%, 10%) and 1%, 2% by vol of steel fibers. The Air-Entraining Agent (A-E-A) dosages at the ratios of 0.08% of cement weight were used. The mechanical tests were carried out on the specimens such as the compressive strength, the tensile strength and the porosity. The results showed that the tensile and bending properties of all different mixtures with fibers are significantly higher compared to the reference mortars. A remarkable decrease has been observed in water, density and compressive strength of mortar with chemical admixture. Moreover, the using 1% volume fraction of steel fibers and 10% glass sand, flexural strength of mortar was completely improved.

Citation

ZINE EL ABIDINE Rahmouni , Nadia TEBBAL , Mekki MAZA , Salim ZITOUNI , , (2022-04-08), Combined impact of replacing dune sand with glass sand and metal fibers on mortar properties, Revue des Composites et des Matériaux Avancés-Journal of Composite and Advanced Materials, Vol:32, Issue:2, pages:85-90, IIETA

High performance concrete (HPC) has several advantages in building construction that cannot be achieved using conventional concrete in terms of strength durability, resistance to chemical attack, and workability of high performance concrete are high. The introduction of fillers and additives contributed to the improvement of high-performance concrete (HPC), other parameters also influence the performance of these HPCs, coarse aggregate fraction is known to strongly influence both fresh and hardened concrete’s properties. Consequently, selection of both content and particle size distribution for (HPC) mixture is an important issue regarding the predicted performance of concrete. For to make concrete more improvement , the porosity of the granular skeleton as well as the rheology of our HPC, 3/8 fraction of rolled gravel with smooth and rounded surfaces was introduced, in substitution for the crushed gravel of the same fraction , by testing various combinations of fractions 3/8 of rolled gravel and fraction 8/15 of crushed gravel in the present study, and based on previous results obtained the combinations 35,40 and 45% fraction 3/8 of rolled gravel and 65 , 60 and 55% fraction 8/15 of crushed gravel (binary granular system) respectively, gives a minimal porosity . Super plasticizer and four percentages of pozzolan were experimented. Compressive strength function of coarse aggregate was determined at 7, 14 and 28 days. Results have revealed that the mixtures with modified granule size distribution system ,1.5% of superplasticizer and 5% by weight of pozzolan allow an improvement in the compressive strength of 35.1% relative to the control concrete.

Citation

ZINE EL ABIDINE Rahmouni , Salim ZITOUNI , Mekki MAZA , Nadia TEBBAL , , (2022-02-21), Impact of Rolled and Crushed Aggregate with Natural Pozzolan on the Behavior of HPC, Annales de chimie - Sciences des matériaux, Vol:46, Issue:1, pages:45-52, IIETA

A review of a sustainable mortar with partial alternatives to ceramic and brick as a cementitious material

Citation

ZINE EL ABIDINE Rahmouni , Messaouda BELOUADAH , Nadia TEBBAL , ,(2022), A review of a sustainable mortar with partial alternatives to ceramic and brick as a cementitious material,International Conference on Sustainable Cities and Urban Landscapes (ICSULA 2022),Konya-Turkey / Selcuk University

Most previous research on the term of alkaline and thermal activation, applied in the presence of cement as a main constituent, mixed with industrial waste like (fly ash, slag, glass…) by certain percentages to give a geopolymers or alkali-activated materials for studying the chemical and physical, as well as mechanical behaviour. These methods carried out by chemical solutions such as (NaOH, KOH, Na2CO3…) by different concentrations to facilitate the solubility of the aluminates-silicates, it’s depending on the nature of (CaO-SiO2-Al2O3) system in mineral residues, also there is the thermal method cured at a differents temperature between (20 °C and 100 °C) for 24 h that according to studies and researchers, all these methods to protect the environment from the emission of gaseous pollutants into the atmosphere.

Citation

ZINE EL ABIDINE Rahmouni , imen yamina omri , Nadia TEBBAL , , (2022), Review about the effect of chemical activation of industrials waste which is rich by SiO2 and CaO, Materials Today: Proceedings, Vol:49, Issue:4, pages:997-999, Sciences direct

The high-temperature mechanical behaviour of a glass and brick waste alkaline to synthesize geopolymer mortar was studied. The mortar in question contained 100% glass powder GWP and 90% of a blend of brick waste GBWP, brick waste BWP and a solid activator (10 mol concentration of NaOH mixed with glass water (Na2SiO3). The material was tested during exposure to high temperatures to establish its density, weight loss, compressive strength, accessible porosity in water, expansion of pastes, XRD and TG-DSC analysis using an innovative methodology to notch the hydrated geopolymers paste specimens after exposed to five maximum temperatures, 100℃, 200℃, 400℃, 600℃ and 800℃ without any imposed load during the heating. The results were found that GBWP gave better values in compressive strength, reaching 38.3 MPa at 100℃ and other proportional values at 400℃, 600℃ respectively compared with GWP. As for the density, the high temperature contributed to its decrease, which caused the presence of high porosity at 800℃. On the other hand, the high temperature helped to improve the mechanical and physical behavior of BWP, where the resistance reached 24.91 MPa at 200℃. In addition, for the microstructure and different particles related to the interactions were identified through the XRD and TG-DSC analysis procedure, in order to know the highest temperatures that allow changing the structure and properties of this type of alternative binders.

Citation

ZINE EL ABIDINE Rahmouni , imen yamina omri , Nadia TEBBAL , , (2022), Studying the effect of high temperature on the content of glass and brick waste binders after alkaline activation, Annales de chimie - Sciences des matériaux, Vol:46, Issue:3, pages:117-125, IIETA

This work aims to valorize local materials, such as the clay of southern Algeria, widely used to prepare bricks as rural construction materials. We characterized and identified three types of natural clays from the region of Mâadid province of M’sila. The results show that the yellow clay is a mixture of quartz illite in a very important proportion since the percentage of illite was 47%. While in the green clay, we noted that the predominant constituents are: calcite, quartz, illite, and kaolinite, and the highest percentage is illite was 27.93%. The analytical results show that the red clay is a calcite, quartz, and illite mixture. Several techniques were used: XRD, XRF, FTIR.

Citation

ZINE EL ABIDINE Rahmouni , , (2022), Mâadid Clay In The M’sila Region, Algeria: Evaluation And Characterization, Natural Volatiles & Essential Oils,, Vol:9, Issue:1, pages:1593-1607, Aliva Global Research and Development

Supplementary cementitious materials have been widely used all over the world in ready-mixed mortar due to their economic and environmental benefits; hence, they have drawn much attention in recent years. Whether deriving from industrial waste, agro-waste, or by-products, supplementary cementitious materials can be mixed with blended cement to enhance mortar strength. Supplementary cementitious materials may contain marble, silica fume , glass, ceramic, metakaolin, and brick, to name a few. The utilization of these materials in mortar can partially reduce the consumption of Portland cement, which, in turn, can lessen construction costs, providing materials suppliers, with substantial advantages. Furthermore, despite the drawbacks of their binary blends, the combination of supplementary cementitious materials can lead to many advantages, such as optimized strength, workability, and durability. Unfortunately, these advances have not been fully taken into consideration in state specifications. Hence, by adopting a review approach, this study aimed to provide new insights into the effect of the incorporation of supplementary cementitious materials on the properties of mortar.

Citation

ZINE EL ABIDINE Rahmouni , ,(2022), A review of a sustainable mortar with partial alternatives to ceramic and brick as a cementitious material,,International Conference on Sustainable Cities and Urban Landscapes (ICSULA 2022),Selcuk University. / Konya-Turkey

Valorization of waste of jute fabric and polypropylene as constituents of bio-composites,

Citation

ZINE EL ABIDINE Rahmouni , ,(2022), Valorization of waste of jute fabric and polypropylene as constituents of bio-composites,,4th International Conference on Applied Engineering and Natural Sciences on 10-13, November in 2022,Konya/Turkey.

In recent years, the problems associated with waste management have become very relevant in the frame of a more sustainable model of development and consumption of new resources and energy . The construction industry is one of the activities with the greatest consumption of raw materials together with large production of waste . Specifically, the broad use of plastics in building/construction applications, especially expanded polystyrene (EPS), requires new and low environmental impact approaches for the optimization of the production processes and the reduction of by-products .

Citation

ZINE EL ABIDINE Rahmouni , ,(2022), White Cement Mortar with Polysterene,“IArcSAS” 2nd International Architectural Sciences and Applications Symposium, September 09-11, 2022,,Baku Engineering University Baku, Azerbaijan.

Since concrete is a mixture of cement, aggregates and water, it can be used in a wide range of applications. It has excellent durability and availability which are its main advantages. Although concrete is strong in compression, it is relatively weak in tensile load. Over the years, various materials have been used to strengthen concrete to resist tensile stresses. Metal fiber is one such fiber that comes in different sizes and is used today to reinforce concrete

Citation

ZINE EL ABIDINE Rahmouni , ,(2022), Study of The Effect of Steel Fiber Length on The Behavior of Mortar Combined with Inert and Active Filler,,“IArcSAS” 2nd International Architectural Sciences and Applications Symposium, September 09-11, 2022,,Baku Engineering University Baku, Azerbaijan.

Effect of The Incorporation and Dosage of Metallic Fibers on the Characteristics of Mortar Based on Brick Powder,

Citation

ZINE EL ABIDINE Rahmouni , ,(2022), Effect of The Incorporation and Dosage of Metallic Fibers on the Characteristics of Mortar Based on Brick Powder,,4th International Göbeklitepe Scientific Research congress, 07-08 OCTOBER 2022,,Şanliurfa, Turkey

Self-Compacting Concretes (SCCs) have brought promising insight into the concrete industry to generate environmental impact and reduce costs. the absence of SCC vibrations generates a significant reduction in noise pollution in urban areas, ease of implementation, possibility of concreting heavily reinforced areas or areas with complex geometry and obtaining better quality concrete on the one hand, reduction of working time on site, of personnel during installation and reduction of the costs of industrial processes, on the other hand. Metal chips resulting from the modification of metal parts obtained by turning present problems of environmental pollution and storage. The recycling of this waste in the construction industry is an adequate solution for the production of concrete and can improve some of its properties. An experimental study to study the properties of SCC containing metal shavings with the study of the properties of SCC in the fresh state: flow, L-box and sieve stability. Properties in the hardened state of concretes: compressive strength and ultrasonic pulse velocity. The metal waste in the form of shavings, incorporated in a dosage of 0.5% of concrete volume in the mixtures of SCCs produced, which makes it possible to evaluate the effect of the addition of metal shavings on the characteristics of SCCs in the state fresh and hardened and to recover metal waste, the results confirm the advantage of adding metal shavings in the fresh state the SCCs studied keep their characteristics of self-plasticity, in the hardened state the results show an improvement in the compressive strength of the SCCs studied.

Citation

ZINE EL ABIDINE Rahmouni , , (2022), The Effect of the Use of Residues (Metallic Shavings) in the Formulation of Self-Compacting Concrete in Fresh and Hardened State, Annales de chimie - Sciences des matériaux, Vol:46, Issue:6, pages:301-306, IIETA

The alkali-activated materials prepared by activation of glass powder (GP) and brick waste (BW) on the porosity and absorption of geopolymer paste by alkaline solution (alkali + water glass) were investigated. The effect of the combination of GP and BW on the porosity and absorption of the prepared geopolymer paste was monitored and evaluated by both laboratory and analytical methods. In this paper, three mortars were made with two sources of geopolymer containing 100% BW and 100% GP and blended with 90% GP and 10% BW replacements by mass. The compressive strength, porosity, and absorption of alkali-activated mortar were concurrently examined. Furthermore, the laboratory results obtained were estimated by the general full factorial design method. Finally, the analysis of variance was performed using the test results to analyze the importance of the effect factors and their interactions on the selected responses. The results concluded that mortar activated combined with 10% BW and 90% GP could be utilized in the industry of construction with minimum pollution problems and environment-friendly building materials, with the effect variables significantly affecting the responses.

Citation

ZINE EL ABIDINE Rahmouni , , (2022), Use of a Full Factorial Design to Study the Relationship between Water Absorption and Porosity of GP and BW Mortar Activated, Advances in Civil Engineering, Vol:2022, Issue:1, pages:1-10, Hindawi

The alkali-activated materials prepared by activation of glass powder (GP) and brick waste (BW) on the porosity and absorption of geopolymer paste by alkaline solution (alkali + water glass) were investigated. The effect of the combination of GP and BW on the porosity and absorption of the prepared geopolymer paste was monitored and evaluated by both laboratory and analytical methods. In this paper, three mortars were made with two sources of geopolymer containing 100% BW and 100% GP and blended with 90% GP and 10% BW replacements by mass. The compressive strength, porosity, and absorption of alkali-activated mortar were concurrently examined. Furthermore, the laboratory results obtained were estimated by the general full factorial design method. Finally, the analysis of variance was performed using the test results to analyze the importance of the effect factors and their interactions on the selected responses. The results concluded that mortar activated combined with 10% BW and 90% GP could be utilized in the industry of construction with minimum pollution problems and environment-friendly building materials, with the effect variables significantly affecting the responses.

Citation

ZINE EL ABIDINE Rahmouni , , (2022), Use of a Full Factorial Design to Study the Relationship between Water Absorption and Porosity of GP and BW Mortar Activated, Advances in Civil Engineering, Vol:2022, Issue:1, pages:1-10, Hindawi

Recycling and recovery of waste are now considered as a solution for the future to protect the environment. The marble processing workshops on the other hand, generate a large amount of waste in the form of powder and small parts. Due to these facts, the aim of this study is to valorize marble waste in the form of powder and crushed aggregates (sand) as additions in cementitious matrix building materials. The characterization of the materials used to formulate mortars based on natural dune sand with marble powder and mortars based on mixed sand (dunes sand and crushed sand) and marble powder was measure. In this sense, several series have been studied, varying the addition rate of the marble powder in order to reduce the porosity of the cement matrix, using crushed marble sand to increase the granular cohesion and using of a reducing water admixture (MEDAPLAST SP40) for more performance mortars. Very appreciable results were observed for a dosage of 15% of marble powder and for the combination of 15% of marble powder with 20% of crushed marble sand. This research recommends recycling 35% of marble waste in the cement matrix that contribute effectively to the preservation of the environment.

Citation

Mekki MAZA , Salim ZITOUNI , Nadia TEBBAL , ZINE EL ABIDINE Rahmouni , , (2021-12-26), Combined Effect of Marble Waste as Powder and Aggregate Form on the Proprieties of the Mortar, Annales de Chimie - Science des Matériaux, Vol:45, Issue:6, pages:467-476, Annales de Chimie

As part of protecting the environment from carbon dioxide emissions, all research aims to reduce the use of cement in concrete with cheaper and energy efficient materials. Geopolymer mortar is an environmentally friendly mortar made from industrial solid waste and by-products such as crystalline slag (CS). This research aims to produce a geopolymer mortar from local materials available in Algeria which are not sufficiently valued at present. The aim of this study is to provide geopolymer mortar at high temperatures, operating with a constant hardening temperature of around 60° C. The alkaline activator used in this study was a combination of sodium silicate (Na2SiO3) and 10 M NaOH solution. In addition, crystalline geopolymer mortars (MCS) as the binder material at a curing temperature of 60 °C, ratios of two mixtures of binder were prepared by substituting the sand with 40% CS and 100% CS. For this purpose, the mortar sample with the highest compressive strength was subjected to temperatures of 200, 400, 600 and 800 °C for exposure times of 10 °C per minute and changes in temperature and changes in the physical and mechanical properties was analyzed. As a result of the experiments, the highest mechanicals values were obtained from the mortar samples with a 40% CS content. Following the high temperature tests, 400 °C and 600 °C were determined as critical temperatures for changes in mechanical properties and changes in physical properties, respectively. However, the geopolymer mortars lost around 60% of strength at 800 °C which is the final temperature.

Citation

Mekki MAZA , Nadia TEBBAL , ZINE EL ABIDINE Rahmouni , , (2021-09-02), Combined effect of high temperatures and crystalline slag on the mechanical behavior of geopolymers mortars, . Materials Today: Proceedings, Vol:49, Issue:4, pages:1051-1055, sciencedirect

The present study aims primarily to investigate the possibility of assessing the physico-mechanical behavior of concrete incorporating marble waste or marble powder as a partial replacement for cement using destructive and non-destructive testing methods. Indeed, in this work, cement was partially replaced with marble powder at six different substitution levels, i.e. 5, 10, 15, 20, 25 and 30% by weight, with 1.5% adjuvant (super plasticizer) for each mixture. The samples prepared were then analyzed. In addition, the physico-mechanical properties, in the fresh and hardened states, water-to-cement ratio, absorption and compressive strengths of the concrete samples were examined as well. Moreover, the compressive strength of concrete was assessed through non-destructive testing methods such as the ultrasonic pulse velocity and rebound hammer. Likewise, the relationship between the ultrasound velocity and compressive strength of concrete were also estimated after 3, 7, 28 and 90 days of curing. The findings of the study indicated that, at early age of curing, the values of the compressive strength and ultrasonic pulse velocity were quite small for all replacement levels, of cement with marble powder, between 15 and 30%. Nevertheless, when the curing period was increased, the compressive strength and ultrasonic pulse velocity of all the samples went up as well. In the end, a linear relationship was observed between the ultrasonic pulse velocity and compressive strength for all substitution levels of cement with marble powder.

Citation

ZINE EL ABIDINE Rahmouni , Messaouda BELOUADAH , Nadia TEBBAL , Mokrani el hacen Hichem, , (2021), Evaluation of Concretes Made with Marble Waste Using Destructive and Non-Destructive Testing, Annales de chimie - Sciences des matériaux, Vol:45, Issue:5, pages:361-368, IIETA

This study investigates the effect of the chemical treatment of sawdust on the mechanical and thermal properties of a clay composite reinforced with sawdust in variable mass proportions: 0.5, 1, 1.5, 2 and 2.5%, intended for use as brick in rural houses in desert areas. The sawdust was chemically treated with 5 wt% NaOH and 0.01 wt% KMnO4 solutions. The mechanical test results of the reinforced composite with alkali-treated sawdust show an increase in flexural and compression strength, reaching a maximum value of 0.89 and 4.85 MPa, respectively. However, the thermal test results show a significant decrease in the thermal conductivity of the sawdust-reinforced composite. The best result recorded is that of untreated sawdust, which has a value of 0.37 (W.m−1.K−1) compared to the one reinforced with treated sawdust.

Citation

ZINE EL ABIDINE Rahmouni , Fadhila MOUISSA , Azzedine BENYAHIA , mokhjtar, , (2021), The effect of chemical treatment on the mechanical and thermal properties of composite materials based on clay reinforced with sawdust, Matériaux & Techniques, Vol:109, Issue:1, pages:1-11, EDP Science

Waste recycling has now become the right solution that can offer new renewable and sustainable resources that contribute in the process of construction in the field of civil engineering and thus to protect the environment. Ceramic waste and marble powder constitute an interesting alternative in this case since this waste is available and is abandoned at the construction sites. To achieve these objectives, we are trying through this experimental work to valorize marble powder and ceramic powder as an addition in building materials with a cement matrix. The main goal of this study is to highlight the possibility of recycling and The incorporation together of the marble and ceramic waste is carried out by the substitution of cement by contents of 0% 5%, 10%, and 15 % and using them as an additive in the mortar. The experimental procedure set up aims to determine the physico-mechanical characteristics of the mortars made from marble powder and ceramic powder and to compare them with those of the control mortar without fillers in order to express the profitability of this type of waste. The characteristics to be studied are: density in the fresh state and in the hardened state, sagging, the ultrasonic propagation speed and the compressive and tensile strength at the age of 7, 14, 28 and 90 days, porosity, capillary absorption, leading to the production of local mortar materials characterized by good strength, good porosity and minimum acceptable durability.

Citation

ZINE EL ABIDINE Rahmouni , ADMIN Admin , ,(2021), Effect of ceramic and marble waste on the physico- Mechanical properties of mortar,6th International Conference on Advances in Mechanical Engineering, ICAME 2021,Istanbul, Turkey

Waste recycling has now become the right solution that can offer new renewable and sustainable resources that contribute in the process of construction in the field of civil engineering and thus to protect the environment. Ceramic waste and marble powder constitute an interesting alternative in this case since this waste is available and is abandoned at the construction sites. To achieve these objectives, we are trying through this experimental work to valorize marble powder and ceramic powder as an addition in building materials with a cement matrix. The main goal of this study is to highlight the possibility of recycling and The incorporation together of the marble and ceramic waste is carried out by the substitution of cement by contents of 0% 5%, 10%, and 15 % and using them as an additive in the mortar. The experimental procedure set up aims to determine the physico-mechanical characteristics of the mortars made from marble powder and ceramic powder and to compare them with those of the control mortar without fillers in order to express the profitability of this type of waste. The characteristics to be studied are: density in the fresh state and in the hardened state, sagging, the ultrasonic propagation speed and the compressive and tensile strength at the age of 7, 14, 28 and 90 days, porosity, capillary absorption, leading to the production of local mortar materials characterized by good strength, good porosity and minimum acceptable durability.

Citation

ZINE EL ABIDINE Rahmouni , ,(2021), Combined effect of incorporation industrial waste and preservation Mode in the formulation of mortar,6th International Conference on Advances in Mechanical Engineering, ICAME 2021,,Istanbul, Turkey

Waste recycling has now become the right solution that can offer new renewable and sustainable resources that contribute in the process of construction in the field of civil engineering and thus to protect the environment. Ceramic waste and marble powder constitute an interesting alternative in this case since this waste is available and is abandoned at the construction sites. To achieve these objectives, we are trying through this experimental work to valorize marble powder and ceramic powder as an addition in building materials with a cement matrix. The main goal of this study is to highlight the possibility of recycling and The incorporation together of the marble and ceramic waste is carried out by the substitution of cement by contents of 0% 5%, 10%, and 15 % and using them as an additive in the mortar. The experimental procedure set up aims to determine the physico-mechanical characteristics of the mortars made from marble powder and ceramic powder and to compare them with those of the control mortar without fillers in order to express the profitability of this type of waste. The characteristics to be studied are: density in the fresh state and in the hardened state, sagging, the ultrasonic propagation speed and the compressive and tensile strength at the age of 7, 14, 28 and 90 days, porosity, capillary absorption, leading to the production of local mortar materials characterized by good strength, good porosity and minimum acceptable durability.

Citation

ZINE EL ABIDINE Rahmouni , ,(2021), Combined effect of metal fibers, glass sand and an air-entraining agent on the mechanical behaviour of mortar,6th International Conference on Advances in Mechanical Engineering, ICAME 2021,Istanbul, Turkey

Concrete is widely used as a structural material in civil engineering projects such as tunnels. Taking into account this fact, the behavior of concretes subjected to high temperatures has recently emerged as a major problem for these structures. This trouble concerns both service situations in the case of radioactive waste storage structures and hazardous accidental situations. Where alike cases highlighted by recent fire incidents in tunnels. This work proposes to carry out a series of tests to supplement or consolidate the knowledge already acquired on the high-temperature behavior of concrete, in particular to observe the role played by the cementitious matrix on the evolution of the mechanical properties of concretes with the rise in temperature. The testing program concerned five mixtures, which covered the range of ordinary concretes based on glass powder offering the particularity of having a constant granular skeleton and a volume of paste. destructive (ET) and non-destructive (NDT) testing were carried out at 200 ° C, 400 ° C and 600 ° C on specimens after heating, with the observation of the change in the weight loss of these tested specimens. The experimental results showed a correlation between the evolution of the weight loss and the degree of elevated temperature after exposure. This, revealed the existence of two major zones of behavior of concretes located before and beyond 400 ° C. In the first one, It was noticed an evolution of the compressive strengths, while in the second zone a considerable decrease in mechanical properties was observed.

Citation

ZINE EL ABIDINE Rahmouni , ,(2021), Effect of elevated temperature on destructive (et) and non-destructive (ndt) testing of admixtures in glass concrete,,12th INTERNATIONAL CONFERENCE ON ENGINEERING & NATURAL SCIENCES, December 24-25, 2021,,Bingol, Turkey.

A very long time ago, alkaline metal compounds were excluded from the mineral components in ordinary Portland cement essentially because of their high solubility: a perfectly reasonable conclusion, in scientifictechnical terms. Alkali-activated materials are recognized as potential alternatives to ordinary Portland cement (OPC) in order to limit CO2 emissions as well as beneficiate several wastes into useful products. Geopolymer mortares produced by activation of alkalis have high flexural and compressive strength. Activator ratio, aggregate properties, water/binder ratio, curing time and curing temperature, binding properties are the factors affecting the mechanical strengths of geopolymers. High temperature is required for rapid reaction in geopolymer concretes produced with binders such as blast furnace slag and metakaolin. Due to its high mechanical properties, corrosion resistance, durability, especially desirable performance under high temperature, wide source of raw materials, and low energy consumption, geopolymers has become an increasingly popular research area in recent years and many researchers have conducted studies on the thermal properties of geopolymers and the mechanical properties at high temperatures. Ground granulated blast furnace slag, commonly known as “slag” is another widely available industrial byproduct and a good candidate for use in metakaolin geopolymers to achieve ambient temperature curing. In most of the studies very high amounts of slag are used in metakaolin -slag geopolymers and significant loss in strength of the above geopolymers is observed after exposure to elevated temperatures. Therefore, based on previous research, this paper reviews current knowledge about the comparison between alkali activated slag and metakaolin and the effects of high temperature on geopolymer mortars, including the general proprieties of slag and metakaolin , resistance mechanics, losses mass and micro structures of mortars subjected to high temperatures.

Citation

ZINE EL ABIDINE Rahmouni , ,(2021), A review: the comparison between Alkali activated slag and Metakaolin and the effects of high Temperature on geopolymer Mortars,,6th ASIA PACIFIC International Modern Sciences Congress, December 15-16, 2021,,Delhi, India.

Abstract: Recently a full factorial design is an experiment allows the investigator to study the effect of each factor on the response variable, as well as the effects of interactions between factors on the response variable. The objective of this study is to identify the significant factors and interactions involved in maximizing compressive strength of geopolymer mortar when brick waste activated is used as cement. In this respect, experimental factors at two levels, which are alkaline activator type (Na2SiO3+ NaOH), curing temperature (40°C - 60°C) and cure duration (7-28 days), are selected as possible applicants affecting the compressive strength.According to the full factorial analysis, at the 60 °C curing temperature level when brick waste activated is added to mortar, the compressive strength will be good enough after 28 days. The physic - mechanical analysis shows an excellent agreement between the measured and the estimated values for both the compressive strength and only slight deviations were noticed for high curing temperature. The use of appropriate values of matrix strength and consideration of the improvement in mechanical behavior allow a good agreement between the experimental values and the estimated values .The results demonstrate that brick waste after activation can be used in construction industry. Keywords: Brick waste, Experimental design, Geopolymer mortar, Curing temperature

Citation

ZINE EL ABIDINE Rahmouni , Nadia TEBBAL , , (2019), Recycling of Brick Waste for Geopolymer Mortar Using Full Factorial Design Approach, The Eurasia Proceedings of Science, Technology, Engineering & Mathematics (EPSTEM), Vol:7, Issue:, pages:44-47, ISRES Publishing: www.isres.org

The use of polymer concrete has been extensively developed over the last few years, and a growing attention is being paid to search for ways to strengthen their innovation processes. The object of this work is the valorization of natural resources, such as vegetable fibers and mineral wastes, to reduce the environmental impact and improve the mechanical properties of polymer concrete. More specifically, this investigation focused on the influences of woven fabric orientation on mechanical properties of polymer concrete laminates.

Citation

MANSOUR Rokbi , ZINE EL ABIDINE Rahmouni , BAALI Brahim, , (2019), Mechanical properties of polymer concrete made with jute fabric and waste marble powder at various woven orientations., International Journal of Environmental Science and Technology., Vol:16, Issue:, pages:5087–5094, Springer Nature

In this study, compressive strength values were measured at different curing times (7, 14 and 28 days). The alkali-activation of the brick and glass powder body with potassium water glass having the silicate modulus of 3.0. The 28-days compressive strengths, flexural strength and specific fracture energy of the specimens stored at 40 and 60 °C are evaluated. The storage temperature of specimens and the content of the alkaline solution have a significant influence on all mechanical properties of the studied materials.

Citation

ZINE EL ABIDINE Rahmouni , Nadia TEBBAL , ,(2019), Effect of Curing Temperature in the Alkali-Activated Brick Waste and Glass Powder mortar and Their Influence on Mechanical resistances,RICON19 - Remine International Conference,,University of Beira Interior, Covilhã, Portugal.

A large amount of natural aggregates such as sand and fillers are being consumed in mortar production. At the same time production of solid waste from the demolitions and manufacturing units are also very high. The objective of this study is to identify the significant factors and interactions involved in behavior of mortar with partial replacement of waste ceramic used as alternative sand aggregate and it is compared with controlled mortar. In this respect, experimental factors at two levels, which are sand, are replaced by waste ceramic for various percentages 5%, 10%, 15% , cure duration (7-28 days) and the strength is controlled. According to the full factorial analysis, at the 15% percentage level when waste is added to mortar with sand, the compressive strength will be good enough after 28 days. The results demonstrate that ceramic waste can be used in construction and prove cost effective technique concreting for the future. The physic - mechanical analysis shows an excellent agreement between the measured and the estimated values for both the compressive strength and the porosity and only slight deviations were noticed for high percentage of ceramic content. The use of appropriate values of matrix strength and consideration of the improvement in mechanical behavior allow a good agreement between the experimental values and the estimated values. The results demonstrate that ceramic waste after substitution in the mortar can be used in construction industry and prove cost effective technique concreting for the future.

Citation

ZINE EL ABIDINE Rahmouni , Nadia TEBBAL , Kaddour Imene, Habeta Fouzia, ,(2019), Study of the effects of ceramic waste in the mortar by the Full factorial design approach.,International Conference on Computational Methods in Applied Sciences (IC2MAS19),Gelisim University, Istanbul,Turkey.

This study examines the effect‘s additions of aluminum (AL) on the mechanical performance of mortars subjected to cycles of freeze-thaw. The research evaluated the density, compressive strengths and workability properties of mortar mixtures to which aluminum byproduct was added in different proportions (0%, 5% and 7.5 %,) by weight of cement. The effects of fast freeze-thaw cycles on the mechanical properties of aluminum waste mortar materials (MC, M5 and M7.5) are investigated on the basis of the experimental results. The test results indicate a considerable decrease in workability, mechanical resistance density of plain mortar with the addition of AL. The results also show that the strength of mortar with AL can be sufficient for certain applications, where light and low-strength mortar is required. Overall, the results of this study demonstrate the viability of using AL in the production of low strength concrete, where such usage can help toward a more sustainable construction.

Citation

Nadia TEBBAL , ZINE EL ABIDINE Rahmouni , , (2019), Valorization of aluminum waste on the Mechanical Performance of mortar subjected to cycles of freeze-thaw, Procedia Computer Science, Vol:158, Issue:, pages:1114-1121, Elsevier B.V.

The development of new building materials is the problem of time, where researchers trying to find inexpensive equipment adapted in line with the field of use, the use of additional materials in the cement industry continues to increase and is often called on these metal additions materials we get from natural sources or remnants of industrial materials. In addition, the use leads to a reduction of clinker consumption and contribute to solving environmental problems in a simple and economical manner. The main objective of this experimental work is to study the proportion of powdered glass and marble dust on the physical and mechanical behavior of the composite cement and mortar. The obtained results the results obtained show that the partial compensation of glass cement powder 10% give the best values.

Citation

Messaouda BELOUADAH , ZINE EL ABIDINE Rahmouni , Nadia TEBBAL , , (2019), Influence of the addition of glass powder and marble powder on the physical and mechanical behavior of composite cement, Procedia Computer Science, Vol:158, Issue:1, pages:366-375, Elsevier B.V.

This study aims to valorize calcined kaolin powder as an addition to cementitious matrix building materials. The main purpose of this study is to formulate and analyze the performance of metakaolin mortars. The preparation of the metakaolin was carried o ut by calcining the Kaolin at a temperature of 800 °C for duration of 3 hours. A comparison of the results with a control mortar without addition is established. The observed results showed that the rate of substitution of 10% of cement by metakaolin increases the compressive strength and tensile strength at a young age.

Citation

Nadia TEBBAL , ZINE EL ABIDINE Rahmouni , , (2019), Rheological and Mechanical Behavior of Mortars with Metakaolin Formulation, Procedia Computer Science, Vol:158, Issue:158, pages:45-50, ScienceDirect ® is a registered trademark of Elsevier B.V.

The search for a cheaper binder using natural resources and industrial waste has become a major concern in the manufacture of cement. According to the literature, researchers have found that glass and marble waste in the form of powder can be introduced into cement to obtain a cheaper and less polluting cement. In this study, we attempted to determine the strength of concrete containing glass powder and marble powder by partially replacing cement in concrete. Cement substitution by these mineral additions in the range of 5% to 10%. This approach is based on the properties of the material and its effect on the physical and mechanical properties of concrete. Several parameters are considered, namely: the effect of filler, the effect of the adjuvant and the ratio W / C, to lead, to the making of a concrete based on local materials characterized by good strength, porosity minimum and acceptable durability.

Citation

Messaouda BELOUADAH , ZINE EL ABIDINE Rahmouni , Nadia TEBBAL , , (2019), Experimental characterization of ordinary concretes obtained by adding construction waste (glass, marble), Procedia Computer Science, Vol:158, Issue:158, pages:153-162, Elsevier Ltd.

This study aims to valorize mineral residues as an addition to cementitious matrix building materials. It is part of a sustainable development approach. The use of recovered and recyclable industrial residues as a partial replacement of Portland cement in concrete reduces greenhouse gas emissions and results in the manufacture of concrete with less environmental impact. The use of crushed glass powder to replace clinker presents a promising way to recover and recycle waste. By taking advantage of different experimental techniques, particular attention is given to the behavior of the finely ground glass powder associated with Portland cement. Cement replacement by glass powder in the range 5% to 10%. This approach is based on the material properties and its effect on the properties of hardened concrete strength porosity, several parameters are considered, namely: The effect of filler, the effect of adjuvant and W/C, porosity, leading to the production of concrete local materials characterized by good strength, porosity and minimum acceptable durability.

Citation

Messaouda BELOUADAH , ZINE EL ABIDINE Rahmouni , Nadia TEBBAL , ,(2019), Study Of The Effect Of Mineral Additions In The Development Of Mechanical Properties And The Improvement Of The Rheological Behavior Of Concrete,5th International Conference On Advances In Mechanical Engineering,Istanbul, Turquie

Recently a full factorial design is an experiment allows the investigator to study the effect of each factor on the response variable, as well as the effects of interactions between factors on the response variable. The objective of this study is to identify the significant factors and interactions involved in maximizing compressive strength of geopolymer mortar when brick waste activated is used as cement. In this respect, experimental factors at two levels, which are alkaline activator type (Na2SiO3+ NaOH), curing temperature (40°C - 60°C) and cure duration (7-28 days), are selected as possible applicants affecting the compressive strength.

Citation

Nadia TEBBAL , ZINE EL ABIDINE Rahmouni , ,(2019), RECYCLING OF BRICK WASTE FOR GEOPOLYMER MORTAR USING FULL FACTORIAL DESIGN APPROACH,International Conference on Technology, Engineering and Science (IConTES2019),Antalya, Turkey.

This paper presents an experimental investigation on the performance of concrete with and without glass powder (GP) subjected to elevated temperatures. Mechanical and physicochemical properties of concretes were studied at both ambient and high temperatures. One of the major environmental concerns is disposal or recycling of the waste materials. However, a high volume of the industrial production has generated a considerable amount of waste materials which have a number of adverse impacts on the environment. Further, use of glass or by-products in concrete production has advantages for improving some or all of the concrete properties. The economic incentives and environmental benefits in terms of reduced carbon footprint are also the reason for using wastes in concrete. The occurrence of spalling, compressive strength, mass loss, chemical composition, crystalline phase, and thermal analysis of CPG before and after exposure to various temperatures (20, 200, 400, and 600oC) were comprehensively investigated. The results indicated that, the critical temperature range of CPG was between 400oC and 600oC.

Citation

ZINE EL ABIDINE Rahmouni , Nadia TEBBAL , messaouda.belouadah@univ, , (2018), Effects of glass powder on the characteristics of concrete subjected to high temperatures, Advances in Concrete Construction, Vol:6, Issue:3, pages:311-322, Techno Press

The objective of this study is to analyze the effect of the air entrainment on the fresh rheological properties as well as on the compressive mechanical resistances of the mortars. The hardened concrete contains a certain amount of randomly spread air, coming either from a drive during kneading or from the evaporation of the mixing water. The air quantity is in the order of 20 l / m3, ie 2% of the volume. However, the presence of a large volume of air bubbles causes the mechanical resistances to fall in compression. On the other hand, the use of air entrainment could improve the rheological properties of fresh concrete. Experimental studies have been carried out to study the effect of air entrainment on compressive strength, density and ingredients of fresh concrete mix. During all the study, water cement ratio (w/c) was maintained constant at 0.5. The results have shown substantial decreasing in water and mortar density followed with decreasing in compressive strength of mortar. The results of this study has given more promising to use it as a guide for mortar mix design to choose the most appropriate concrete mix design economically.

Citation

Nadia TEBBAL , ZINE EL ABIDINE Rahmouni , Chadi Lamis Rabia, , (2018), Study of the Influence of an Air- Entraining Agent on the Rheology of Mortars, MATEC Web of Conferences, Vol:149, Issue:1054, pages:544-570, EDP Sciences

Les bétons autoplaçant (BAP) sont des bétons très fluides, qui se mettent en place sans vibration. Lors du coulage dans un coffrage, le serrage d’un BAP est assuré sous le simple effet de la gravité. Grâce à leur formulation, ils offrent des caractéristiques exceptionnelles d’écoulement et de remplissage des coffrages tout en résistant parfaitement à la ségrégation. Homogènes et stables, ils présentent des résistances et une durabilité analogues à celles des bétons traditionnels dont ils se différencient par leurs propriétés à l’état frais. Les bétons sont connus par leurs fragilités en traction. L’introduction de fibres dans une matrice de béton conduit à l’amélioration de nombreuses propriétés. Les effets des fibres sur leur comportement à l’état frais et à l’état durci sont de grande importance pour un plus large usage de ces matériaux. Les objectifs visés par ce sujet est d’évaluer les propriétés rhéologiques et mécaniques d’un béton autoplaçant renforcé par des fibres (fibres métalliques et fibres de verre) avec différentes dimensions (L=2.5etL= 5 cm) et différentes pourcentages des fibres de 0,15%, et 0.3% en volume de béton pour les fibres métalliques et de 0,1%, et 0.15% en volume de béton pour les fibres de verre afin de voir l’influence de la nature et les dimensions de la fibre sur les propriétés du béton autoplaçant fibré à l’état frais et à l’état durci. Les résultats tirés de nos essais expérimentaux montrent qu’à dosage égal les fibres métalliques améliorent les propriétés des BAP à l’état frais et durci et donnent des meilleurs résultats par rapport aux fibres de verre, et la performance du béton autoplaçant avec fibre courte est mieux qu'à fibres longues. Mots clés : Bétons autoplaçant, fibres métalliques, fibres de verre, propriétés mécaniques, rhéologie.

Citation

Noura DJEBRI , ZINE EL ABIDINE Rahmouni , Larbi BELAGRAA , ,(2018), Etude de l’ınfluence de la Nature et les Dımensıons des Fıbres sur les Propriétés Rhéologiques et Mécaniques des Bétons Autoplaçants,International Symposium on Construction Management and Civil Engineering (ISCMCE- 2017),Skikda, Algeria

L’utilisation des Bétons autoplaçant (BAP) s’est considérablement développée au cours des dernières années et une attention grandissante est portée à l'étude de leurs propriétés rhéologiques et mécaniques. L’incorporation des fibres dans la composition du béton autoplaçant (BAP) est un intérêt qui mérite d'être étudié. L’objectif de ce travail, c’est la valorisation des ressources naturelles telles que les fibres végétales en les utilisant comme renfort du béton autoplaçant. Pour réduire l’impact environnemental et améliorer le comportement rhéologique et mécanique (flexion, compression) du béton autoplaçant. Dans ce travail, nous avons étudié l’effet de l’introduction des fibres d’Alfa dans un béton autoplaçant. Ainsi que l’influence du traitement chimique de ces fibres par 3% de NaOH. Les résultats des tests sur les différentes éprouvettes en bétons autoplaçants renforcés par ces fibres, montrent que la solution NaOH à un effet significatif sur les propriétés rhéologiques et mécaniques (le comportement à la flexion trois points et compression). Les résultats de ce travail suggèrent que les fibres d’Alfa sont comparables à d’autres fibres naturelles utilisées comme renfort dans des bétons. Elles sont complètement aptes à l’utilisation comme renfort dans les bétons autoplaçants. Mots clés : renforcement, fibres végétales, traitement chimique, béton autoplaçant, fibres d’Alfa, propriétés mécaniques, rhéologie.

Citation

Noura DJEBRI , ZINE EL ABIDINE Rahmouni , Larbi BELAGRAA , ,(2018), Etude De L’effet De L’introduction Des Fibres Végétales Traitées Sur Les Propriétés Rhéologiques Et Mécaniques Des Bétons Autoplaçants,2ème séminaire internationale de Génie Civil (SIGC2018),Oran Algérie

L’utilisation des Bétons autoplaçant (BAP) s’est considérablement développée au cours des dernières années et une attention grandissante est portée à l'étude de leurs propriétés rhéologiques et mécaniques. L’incorporation des fibres dans la composition du béton autoplaçant (BAP) est un intérêt qui mérite d'être étudié. L’objectif de ce travail, c’est la valorisation des ressources naturelles telles que les fibres végétales en les utilisant comme renfort du béton autoplaçant. Pour réduire l’impact environnemental et améliorer le comportement rhéologique et mécanique (flexion, compression) du béton autoplaçant. Dans ce travail, nous avons étudié l’effet de l’introduction des fibres d’Alfa dans un béton autoplaçant. Ainsi que l’influence du traitement chimique de ces fibres par 3% de NaOH. Les résultats des tests sur les différentes éprouvettes en bétons autoplaçants renforcés par ces fibres, montrent que la solution NaOH à un effet significatif sur les propriétés rhéologiques et mécaniques (le comportement à la flexion trois points et compression). Les résultats de ce travail suggèrent que les fibres d’Alfa sont comparables à d’autres fibres naturelles utilisées comme renfort dans des bétons. Elles sont complètement aptes à l’utilisation comme renfort dans les bétons autoplaçants. Mots clés : renforcement, fibres végétales, traitement chimique, béton autoplaçant, fibres d’Alfa, propriétés mécaniques, rhéologie.

Citation

Larbi BELAGRAA , Noura DJEBRI , ZINE EL ABIDINE Rahmouni , ,(2018), ETUDE DE l’EFFET DE l’INTRODUCTION DES FIBRES VEGETALES TRAITEES SUR LES PROPRIETES RHEOLOGIQUES ET MECANIQUES DES BETONS AUTOPLAÇANTS.,SIGC- 2018,ENP-Oran

This study examines the effect of the additions of silica fume and super plasticizer on the mechanical performance of high performance concretes at high temperatures. The tested concretes are formulated with 5% silica fume and two dosages of super plasticizers in the ratio of (2%, 2.5%) the weight of cement after having been exposed to four maximum temperatures, 200 °C, 400 °C, 600 °C and 900 °C without any imposed load during the heating. The results obtained show that the mechanical resistance at 28 day increases with the degree of temperature compared to that measured at 20 °C. On the contrary, a clear decrease is observed between 600 °C and 900 °C. However, material composition seems to have great influence on the mechanical strength.

Citation

Mekki MAZA , Nadia TEBBAL , ZINE EL ABIDINE Rahmouni , , (2017-09-08), 4) COMBINED EFFECT OF SILICA FUME AND ADDITIVE ON THE BEHAVIOR OF HIGH PERFORMANCE CONCRETES SUBJECTED TO HIGH TEMPERATURES,, Mining Science, Vol:24, Issue:, pages:129-145, mining Science

The self-compacting concretes (SCC’s) are characterized by their high fluidity so that they could be placed without any vibration. The effect of fillers addition on the behavior of SCC in fresh and hardened state is of great importance. This incorporation of marble powder aims to preserve the environment and to widen its use in the future in SCC formulation. The present research experimental program examines the effect of the partial substitution of cement with marble powder on the characteristics of self-compacting concrete in fresh and hardened state. Thus, the marble powder (MP) was introduced into the composition of self-compacting concretes at dosages of 10%, 20% and 30%. Three water cement ratios (W/C) of 0.4, 0.5 and 0.6 were maintained for the studied mixtures. The reference one with 100% of cement served as a control concrete mix. Finally, it can be concluded that such valuation of the marble waste could be beneficial for self-compacted concrete formulation.

Citation

Noura DJEBRI , ZINE EL ABIDINE Rahmouni , Larbi BELAGRAA , , (2017), Experimental Investigation on the Effect of Marble powder on the performance of Selt-Compacting Concrete (SCC), Mining Science, Vol:24, Issue:24, pages:183–194, Danuta Szyszka

The use of Self Compacting Concretes (SCC) has considerably developed during the last years and a growing attention is carried out aboutthe study of their rheological and mechanical properties. The incorporation of fibers in the SCC composition of the concrete is of interestthat deserves to be studied. The objective of this work, focuses on the formulation and the properties of concrete made from local materials local and reinforced with steel fibers. The behaviorassessmentconcerns then the fresh and hardened state.fibers. Two types of fibers the first commercialized as (FIBRETEX A), the second it is simple rounded steel wirescut at identical dimensions like FIBRETEX. These latter are considered as recycled workshop waste. The results of the present work suggest that the used fibers are comparable to other steel fibers incorporated in concretes so far. They are completely capableto give similar performances as reinforcement in self compactingconcrete. Keywords; Compacting concrete, steel fibers, reinforcement,mechanical properties, rheological properties.

Citation

Noura DJEBRI , ZINE EL ABIDINE Rahmouni , Larbi BELAGRAA , ,(2017), STUDY OF THE EFFECT OF STEEL FIBERS ON THE RHEOLOGICAL AND MECHANICAL PROPERTIES OF SELF COMPACTING CONCRETE (SCC),ICEUBI2017 - INTERNATIONAL CONGRESS ON ENGINEERING,University of Beira Interior – Covilhã, Portugal.

Résumé: Le béton auto plaçant (BAP) est un béton capable, sous l'unique effet de la pesanteur, de se mettre en place dans les coffrages même les plus complexes et particulièrement encombrés sans nécessiter pour tout autant des moyens de vibration. L'utilisation du la fibre de verre dans la composition du béton autoplaçant (BAP) est un travail qui vise d'une part la sauvegarde de l'environnement en réutilisant les déchets et d'autre part la valorisation des matériaux locaux dans le domaine de la construction, de ce fait, la fibre de verre a été introduite dans la composition des BAP suivant deux teneurs 0.1%, 0.15%. Les matériaux testés sont 5 bétons de résistance courante dont 4 BAP avec fibres et un BAP témoin. La particularité des BAP est le volume de pâte important. Après exposition à des cycles de températures 200, 400 et 600°C des essais mécaniques (résistance à la compression, à la traction par flexion) et les essais non destructifs ont été réalisés. Parallèlement à cela, la détermination de la porosité à l'eau, et la perte de masse. Les résultats expérimentaux montrent des comportements significatifs entre les BAP avec fibre et BAP témoin. Les essais de résistance à la compression ont permis de distinguer un gain de résistance entre 200 et 400 C°. Ce gain est expliqué par une réhydratation de la matrice cimentaire due à la migration de l'eau à travers les pores pour les BAP. L’utilisation des méthodes non destructives a permis d'obtenir une corrélation acceptable pour la détermination la résistance du béton in situ déterminé par le scléromètre et des méthodes ultrasoniques de vitesse d'impulsion. Les méthodes non destructives donnent des résultats fiables. Mais sans connaître les matériaux qui constituants le béton ces résultats restent estimative Mots-clés: Béton autoplaçant, Haute température, Propriétés mécaniques, Essai non destructif, Fibre de verre.

Citation

Noura DJEBRI , ZINE EL ABIDINE Rahmouni , Larbi BELAGRAA , ,(2017), Etude de l’effet des Températures Elevées sur les Propriétés Mécaniques d’un Béton Autoplaçant Renforcé par des Fıbres de Verre,,International Symposium on Construction Management and Civil Engineering (ISCMCE- 2017),,Skikda, Algeria

Composite materials based on woven Alfa and unsaturated polyester resins were manufactured by hand layup technique. The Alfa fibers were collected from the M’Sila region (Algeria). Different chemical treatments such as mercerization, permanganate, acetylating and dichromate have been used in order to modulate the mechanical properties of these composites. According to tensile and flexural tests, the treated composites showed better mechanical performances compared to their untreated counterparts. Actually, the permanganate treated fiber-reinforced composites showed 43.02 % of increase in tensile strength and 31.59 % in Young’s modulus, while the acetylated fiber-reinforced composites showed maximum improvement in flexural strength of about 23.80 %. Furthermore, the flexural modulus was also improved by 35.7 % compared to the untreated Alfa fiber composites. FTIR characterization of Alfa fibers showed that the quantity of hydroxyl groups (-OH) decreased and the crystallinity index increase by 20.53% after alkali treatment. SEM observations on fibers surface showed that the different chemical treatments modified the fiber which improved the fiber–matrix adhesion. Keywords: . Alfa fibers, composites, chemical treatment, tensile test, mechanical properties.

Citation

Azzedine BENYAHIA , Ali REDJEM , ZINE EL ABIDINE Rahmouni , ABDELLAH Merrouche , , (2016), Study of the mechanical properties of a composite material: alfa fibers / unsaturated polyester, Romanian Journal of Materials, Vol:46, Issue:1, pages:25-33, University POLITEHNICA Bucharest - Romania

For several decades, the field of study of high-temperature on the behavior of ordinary concrete was investigated both experimentally and theoretically. However, novel materials as self-compacting concrete (SCC), where the risk of thermal instability is accentuated and whose mechanical behavior for high temperature exposure still not much explored. In addition, the specific formulation of this type of concrete related to its placement requirement. This is capable to modify the mechanical behavior at the hardened state once compared to the traditional vibrated concrete. The SCC behavior subjected to high temperature has to be particularly studied. The present research work used five types of concrete materials of actual resistance; where four self-compacting concrete mixtures and one ordinary concrete were used. The particularity of the self-compacting concrete is the important dough volume, after exposure of temperature cycles 200C°, 400C° and 600°C degrees of mechanical tests compression strength, tensile strength and the elastic modulus) were evaluated, in parallel to this, the determination of water porosity and the weight loss. The concrete degradation after a certain time after the cooling was studied. For specimenssubjected to different heat cycles and left 30 days in the laboratory (in the open area), the measured weightloss and compressivestrength tests were conducted. Keywords:Self compacting concrete (SCC), Degradation, high temperature, mechanical properties.

Citation

Noura DJEBRI , ZINE EL ABIDINE Rahmouni , Larbi BELAGRAA , ,(2016), The effect of high temperature exposure on the behavior of Self-compacting concrete (SCC),12th International Congress on Advances in Civil Engineering, ACE 2016,Boğaziçi University Istanbul, Turkey

Les bétons autoplaçant (BAP) sont des bétons très fluides, qui se mettent en place sans vibration. Lors du coulage dans un coffrage, le serrage d’un BAP est assuré sous le simple effet de la gravité. Grâce à leur formulation, ils offrent des caractéristiques exceptionnelles d’écoulement et de remplissage des coffrages tout en résistant parfaitement à la ségrégation. Homogènes et stables, ils présentent des résistances et une durabilité analogues à celles des bétons traditionnels dont ils se différencient par leurs propriétés à l’état frais. Les bétons sont connus par leurs fragilités en traction. L’introduction de fibres dans une matrice de béton conduit à l’amélioration de nombreuses propriétés. Les objectifs visés par ce sujet est d’étudier l’influence de l’introduction des fibres (fibres métalliques et fibres de verre) sur le comportement des bétons autoplaçant à l’état frais et à l’état durci. Les résultats tirés de nos essais expérimentaux montrent qu’a dosage égal les fibres métalliques améliorent les propriétés des BAP à l‘état frais et durci et donnent des meilleurs résultats par rapport aux fibres de verre. Mots clés : Bétons autoplaçant, fibres métalliques, fibres de verre, propriétés mécaniques, rhéologie.

Citation

Noura DJEBRI , ZINE EL ABIDINE Rahmouni , Larbi BELAGRAA , ,(2016), Etude de l’effet de l’introduction des fibres sur les propriétés mécaniques et rhéologiques des bétons autoplaçants,3ème Congrès International sur la technologie et la durabilité du béton (CITEDUB 3),USTHB, Alger

This paper has the aim of characterizing the behavior of a dunes sand collected in Boussaâda city (wilaya of M’sila, Algeria), where important disorders were observed in the road works and in the small buildings. Triaxial drained shear tests results performed on this sand using a servo-controlled triaxial press are presented and described. Simulation results of the sand behavior using two hyperbolic models and their application to calculate the bearing capacity of strip footing resting on a sand massif of geotechnical characteristics comparable with those of Boussaâda dunes sand are also presented and analyzed. It is concluded that the numerical results are concordant with the experimental results for the considered hyperbolic models. But, these two models lead to bearing capacity values lower than those given by Terzaghi’s formula.

Citation

ZINE EL ABIDINE Rahmouni , ABDELAZIZ Meddah , Mohammed KHEMISSA , ,(2012), Dunes sand behavior under triaxial loads,International Science and Technology Conference, ISTEC’2012, Dubai, December 13-15, 2012.,United Arab Emirates

Cette communication a pour objet de caractériser le comportement d’un sable de dunes prélevé dans la région de Boussaâda (wilaya de M’sila, Algérie), où d’importants désordres ont été observés. Elle présente les résultats d’un programme d’essais triaxiaux drainés effectués sur ce sable à l’aide d’une presse triaxiale asservie. Elle présente ensuite les résultats d’une simulation du comportement du sable et se termine par une application au dimensionnement d’une semelle filante ancrée dans un massif de sable de caractéristiques comparables à celui de Boussaâda.

Citation

Mohammed KHEMISSA , ABDELAZIZ Meddah , ZINE EL ABIDINE Rahmouni , ,(2012), Comportement d’un sable de dunes sous sollicitations triaxiales,Séminaire International ‘‘Paramètres et Identification en Géotechnique’’, ATMS, 15-16 mars 2012.,Hammamet, Tunisie

Cet article présente les résultats d'une série de calculs de stabilité effectués sur le versant instable de Sidi-Ahmed (Béjaïa, Algérie), où d’importantes habitations urbaines nouvelles ont été construites, et propose une solution pour son confortement. Les calculs de stabilité effectués visent à situer la ligne de rupture ayant af-fecté l’équilibre du versant et à en déterminer le coefficient de sécurité. Les résultats obtenus montrent que le glissement est vraisemblablement plan, incliné dans le sens de la plus grande pente. Ils confirment les observations faites sur le terrain et les résultats de l’étude géotechnique effectuée sur ce site. Parmi les solutions de confortement possibles du versant, le renforcement par pieux en béton armé apparaît comme la technique la mieux adaptée. Les résultats des calculs effectués semblent privilégier de disposer une seule rangée de pieux en milieu de pente.

Citation

Mohammed KHEMISSA , ZINE EL ABIDINE Rahmouni , ,(2003), Analyse de la stabilité et stabilisation par pieux du versant instable de Sidi-Ahmed (Béjaïa, Algérie),13ème Congrès Régional Africain de la Géotechnique, 8-11 décembre 2003,Marrakech, Maroc