MOHAMED AZIZ Chikouche

DERRAS Abir

Réutilisation des produits en argile rouge comme granulats dans le béton – Revue bibliographique

AICHE BORHAN EDDINE , BAKOUR ACHREF

Comportement d’un béton ordinaire à sable recyclé de type céramique sanitaire dans un milieu acide

MAHDADI ABDELKRIM

L'incorporation des boues de dragage dans la fabrication des briques -Etude bibliographique -

Mostafaoui hadda , Lahmidi khadidja

Effet de la dégradation chimique sur un béton ordinaire avec granulats recyclés de type céramique sanitaire

SAFARI Amina , ABDELKEBIR Nadjet

Comportement d’un béton élaboré avec des granulats de céramique sanitaire

Bouchamba Hicham , Saoudi Okba

L'introduction des déchets de céramique dans Le squelette granulaire d'une béton

BOUAZIZ rowaida , FERDJOUKH Nor elhouda

Comportement d’un béton ordinaire sous l’influence d’un sable de déchets de type céramique sanitaire

BENZOUAD Hadj , SAADI Amar

Introduction des déchets de type céramique sanitaire dans la confection des ciments

Lamara Fouad

Réutilisation des céramiques comme granulats dans le béton ordinaire -Etude bibliographique

AZZOUT Zakaria

Influence des ajouts minéraux sur le durcissement des matériaux cimentaires Etude bibliographique

BOUZOUAOUI SIFEDDINE

Confection d’un béton ordinaire avec des déchets de céramique sanitaire

BARKAT Halima , AMMARI Ibtissam

L’effet d’un sable à base de déchets céramique sur les caractéristiques d’un béton ordinaire

ALI-HALASSA Riad

Valorisation d'une boue de dragage dans la matrice cimentaire d'un mortier et béton ordinaires

BENZEMMOURI ZOULIKHA

Influence des ajouts cimentaires sur la cinétique d'hydratation des ciments. -Etude bibliographique -

GUECHI MILOUD , SAADI NOUR EL ISLAM

Béton à base de graviers industriels(déchets céramiques)-Etude bibliographique-

Bouaziz Amel , Achour Hanan

Confection d’un béton ordinaire avec l’introduction d’une vase calcinée

ZOUBIRI Walid , BETTICHE Yamina

L’introduction de la boue de dragage dans la matrice cimentaire d’un béton ordinaire

Cherfaoui Saadi , Anas Issam Fayiz Samara

Béton avec des granulats céramique recyclés

Despite the crucial importance of road infrastructure in socio-economic development, it nevertheless suffers from conventional construction methods which have a considerable environmental and energy footprint. This is due to a heavy reliance on non-renewable resources, high energy consumption, and associated carbon emissions. Faced with these challenges, in situ soil treatment and stabilization emerge as a promising strategic alternative, aiming to improve the geotechnical properties of local materials through mechanical or chemical processes to sustainably integrate them into the road structure. It is within this context that this experimental study is situated, conducted on a red silty-clay soil sampled from the Chaaba Elhamra site (M'sila region, Algeria), with a view to its use in the construction of road embankments and pavement layers. This experimental research aims to evaluate the geotechnical characteristics of this red soil before and after treatment with two classes of cement (CEM-II/B-L 32.5 N and CEM-II/B-L 42.5 N) and to analyze the impact of the cement class on its geotechnical properties. The results showed that the cement percentage had a beneficial effect on the geotechnical characteristics of this red silty-clay soil. Furthermore, they highlighted that the type of cement did not have a significant influence on the physical parameters, compaction parameters, and CBR indices.

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LAKHDAR Mekki , Ahmed SEDDIKI , ABDERRACHID Amriou , Larbi BELAGRAA , MOHAMED AZIZ Chikouche , ,(2025-05-12), Impact Of Cement Class On The Geotechnical Properties Of Red Soil From M'sila, Algeria.,The 1st International Conference on Green Engineering,Bordj Bou Arreridj

This article describes the influence of slag cement on the compressive strength, carbonation and hydration evolution rate of a cement matrix. Slag was used in different percentages to replace clinker. Tests on standardized mortar were carried out to determine compressive strength and depth of carbonation. Microstructure tests were carried out on cement paste containing different levels of slag at 2, 7 and 28-day maturities. The paste microstructure tests are based on a thermogravimetric study. The test analyzes the quantity of cement hydrates using an indicator known as the degree of hydration. The experimental data obtained are compared and interpreted in terms of the development of strength and carbonation as a function of cement hydration.

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Saida BOUALLEG , MOHAMED AZIZ Chikouche , Larbi BELAGRAA , ,(2025-05-12), Contribution To The Study Of The Correlation Of Mechanicals And Microstructurale Properties In Binary Cements,The 1st International Conference on Green Engineering,Bordj Bou Arreridj

This article aims to propose a solution to two environmental problems. One is the siltation of dams, the other represents the rate of cement used in mortar and concrete. The solution is to introduce calcined dredging sludge as a substitute for cement. A heat treatment at 600°C was applied to the sludge with different heating rates (5, 10 and 20°C/min). For the preparation of the mortars. The setting time, non-evaporable water and the porosity accessible to water were measured. Under the filler effect, this substitution improves the compactness of the mortars by tightening the capillary pores. The last processing speed was adopted (20°C/min), and different percentages were selected (5, 10 and 20%) to elaborate concrete. The strengths and the portlandite rate from the modified cement concretes are lower than the control. In concrete, the pozzolanic reaction is very weak for strength development due to a lack of reactive silica and a low percentage of kaolin. However, the results obtained for 5% substitution are satisfactory, with a 90% reduction in strength at 90 days.

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MOHAMED AZIZ Chikouche , Saida BOUALLEG , LAID Baali , Mekki BIBI , ,(2025-05-12), Assessment Of An Eco-Binder Based On Dam Sludge.,The 1st International Conference on Green Engineering,Bordj Bou Arreridj

The analysis of the microstructure of cements is focused on the evolution of the hydration rate of cement pastes with slag by thermogravimetric and XRD analysis, these cements containing different percentages of slag (0%, 10%, 20% and 30%) by the clinker substitution method. The evolution of the kinetics was studied for the periods of 3, 7 and 28 days. The test allows the analysis of the quantity of cement hydrate by means of an indicator called degrees of hydration, bound water and non-evaporable water. By coupling this technique to the carbonation depth, and compressive strength of a standard mortar. The experimental data obtained are compared and interpreted regarding the evolution of strength and carbonation as a function of the degree of hydration, bound water and non-evaporable water to the hydrates of the cements studied.

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Larbi BELAGRAA , Saida BOUALLEG , MOHAMED AZIZ Chikouche , ,(2025-05-12), Cntribution to the study of thr correllation of mechanical and micro structural properties in binary cements,ICGE 25,Bachir Ibrahimi University of B B Arreridj

The aim of this work is to quantify cement hydration as a function of the mechanical and chemical characteristics of mortar cement. To control the quantity of hydrated cement, we adopted the thermogravimetric thermogravimetric (TGA) method, which enabled us to determine the degree of hydration α(t),This technique is coupled with carbonation and ordinary mortar strength. The experimental data obtained were correlated and interpreted the evolution of strength and carbonation as a function of the degree of hydration, unavoidable. Cements containing different percentages of slag.The evolution of kinetics was studied for 3, 7 and 28 days. According to the results obtained, the hydration rate is inversely proportional to the addition content in the cement. The degree of hydration is directly related to the formation of hydrates and portlandite. The greater the quantity, the greater the hydration.The Bhatty Bhatty method is verified for calculating the degree of hydration and can be successfully applied to composite cements.

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Saida BOUALLEG , MOHAMED AZIZ Chikouche , ,(2023-10-18), study of the correlation chemical-mechanical test and the hydration rate of cement mortar based on slag materials,first national conference on advanced materials and their application(NCAMA 23 ),tipaza/algeria

This article aims to propose a solution to two environmental problems. One is the silting up of dams, despite the dredging operations. The other represents the rate of cement used in the mortar or concrete. The solution is to introduce the calcined dredged sludge as a cement substitute. Treatment at 600 °C with different heating rates (5, 10 and 20 °C/mn) was applied to make the mortar and measure setting time and hydration temperature. This substitution increased the values of both tests due to the dilution and filler effect. Choosing the last speed, different percentages have been selected (5, 10 and 20%) to produce ordinary concrete and the follow up of the compressive strength and water absorption tests. The results of the two tests are lower than the control. In concrete, the pozzolanic reaction is very weak to develop a compact structure due to a lack of reactive silica. The results obtained for 5% and 10% of substitution are very encouraging.

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Saida BOUALLEG , MOHAMED AZIZ Chikouche , ,(2022-06-28), THE BAHAVIOR OF CEMENT WITH DAM SLUDGE AS RAW MATERIEAL,FIRST NATIONAL CONFERENCE ON MATERIALS SCIENCES AND ENGINEERING (MSE 22),KHENCHELA

Reusing expired cement (EC) in cement manufacturing is an alternative way for managing such industrial waste, so this process contributes to preserving the environment and reducing the need for raw materials which creates an innovative solution in circular economy strategies as well as producing a sustainable material. The purpose of this study is to investigate the possibility of using EC as mineral additives for the manufacture of new cement. The different formulations of cements are the results of CEMI subtraction up to 35% by weight with the EC. These modified cements have passed the same tests as a characterization of a CEMII. The obtained results show that EC changes the characteristics of cementitious materials (anhydrous, paste, and mortar). The new cement produced fulfilled the requirements in terms of chemical characteristics. In addition, the decrease in strength caused by EC incorporation is in accordance with standards. It can be stated that EC plays the role of a diluting agent in the new cement. Environmentally, it may be more efficient to use EC as an ecofriendly additive material.

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ABDELAZIZ Meddah , MOHAMED AZIZ Chikouche , Miloud BEDDAR , Mohamed Yahia, Moussa deghfel, , (2022-03-01), The Efficiency of Recycling Expired Cement Waste in Cement Manufacturing: a Sustainable Construction Material, Circular Economy and Sustainability, Vol:2, Issue:3, pages:1213 - 1224, Springer Nature

This work aims to propose a solution to two environmental problems. One is the siltation of dams. The other represents the rate of cement used in mortar and concrete. The solution is to introduce calcined dredging sludge as a substitute for cement. A heat treatment at 600°C was applied to the sludge. Different treatment rates were applied for the preparation of mortars (5, 10 and 20°C/min) to measure the rate of non-evaporable water and the porosity accessible to water. In the first test, the interval is very tight (3.20-3.40%), in the second test, the best porosity is attributed to 600/20 mortar with 18.50% of the total volume, against 19% in CEMI mortar. This substitution improves the compactness of mortars by tightening the capillary pores. For concrete, the last processing rate was adopted and different percentages were selected (5, 10 and 20%). The sound propagation in the UPV test is greater than 4 Km/s with a slight advantage to CEMI concrete followed by concrete with 5%, 10% then 20% of substitution. In concrete, the pozzolanic reaction is very weak to develop a compact structure due to a lack of reactive silica and a low percentage of kaolin (13%). The results obtained for 5% and 10% substitution are very encouraging for the use of these types of cement in second-order works.

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MOHAMED AZIZ Chikouche , ,(2022), Dam sludge effects - as a cement substitution- on cementitious materials,4 th International Conference on Applied Engineering and Natural Sciences,Konya, Turkey

This article aims to propose a solution to two environmental problems. One is the silting up of dams, despite the dredging operations. The other represents the rate of cement used in the mortar or concrete. The solution is to introduce the calcined dredged sludge as a cement substitute. Treatment at 600 °C with different heating rates (5, 10 and 20 °C/mn) was applied to make the mortar and measure setting time and hydration temperature. This substitution increased the values of both tests due to the dilution and filler effect. Choosing the last speed, different percentages have been selected (5, 10 and 20%) to produce ordinary concrete and the follow up of the compressive strength and water absorption tests. The results of the two tests are lower than the control. In concrete, the pozzolanic reaction is very weak to develop a compact structure due to a lack of reactive silica. The results obtained for 5% and 10% of substitution are very encouraging.

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MOHAMED AZIZ Chikouche , ,(2022), Performance of Eco-Binder Made with Dredged Sludge,The Second Edition of MAASI Scientific Week (SW22),Istanbul- Turkey

The use of waste and by-products has been for many decades for the manufacturing of building materials such as concrete and mortars. That responds simultaneously to reasons of economy of natural resources in aggregates (C&D waste) and the possibility of recovering industrial waste additions as replacement in composites. The present study focuses on the use of plastic waste fibers embedded in the cement matrix of selfcompacting concrete SCC to improve its properties, either rheological mainly, the stability at fresh state or mechanical responses such as compressive and tensile strengths at hard state. This incorporation of plastic fiber reinforcement on the structure matrix could result an alternative SCC composite as a ductile material with enhanced properties. In this context, the self-compacting composites by adding a variable percentage of plastic fibers at 0.5, 1, 1.5% is formulated. Hence, the effect of plastic fibers waste on the rheological and mechanical properties of SCC is assessed. The obtained results in the present study let us to conclude the beneficial effect of such inclusion of plastic fibers on this new confected SCC fiber composition with acceptable rheological, physical and mechanical properties compared to those of a normal SCC concrete

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LAID Baali , Larbi BELAGRAA , MOHAMED AZIZ Chikouche , Leila Zeghichi, , (2021-10-01), Study of the Effect of Plastic Waste Fibers Incorporation on the Behavior of Self Compacting Concrete, Annales de Chimie - Science des Matériaux, Vol:45, Issue:5, pages:417-421, International Information and Engineering Technology Association

This paper attempts to simulate the use of green materials from the silt in a dam, and reduce the harmful impacts of siltation on Algerian dams affected by frequent droughts and irregular rainfalls, which are resulted from climate change. These harsh weather conditions are the main cause of water erosion in Algeria, leading to a high silting level in many dams across the country. Therefore, it is necessary to dredge the considerable volumes of sludge in the dam areas. This paper treats the sludge dredged from the K’sob dam, and adds the treated sludge into cement, creating a hybrid binder that can be used in composition of cementitious materials. Specifically, the sludge extracted from the K’sob dam was characterized chemically, physically, mineralogically, and mechanically, and introduced both as a substitute of cement and a component in the mixture of ordinary concrete/mortar. The sludge was firstly activated through calcination, and added to cement at the mass dosages of 10%, 15%, and 20% separately. The mechanical behavior, especially that under compression, of cementitious materials (concrete/mortar) based on the treated sludge was studied through lab tests. The test results show that this technical innovation gives the finished product three major properties, namely, high strength, economy, and a beneficial ecological impact. The results obtained are encouraging and promise an optimal exploitation of the sludge from similar dam areas.

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Mekki BIBI , MOHAMED AZIZ Chikouche , Riad Ali Halassa, , (2021-02-11), Behavior of Cementitious Materials under the Effect of an Eco-Cement Based on Dredged Sludge, Annales de Chimie - Science des Matériaux, Vol:45, Issue:6, pages:455-465, International Information and Engineering Technology Association

The aim of this article is to propose a two environmental problems solution. One is the silting up of dams, despite the expensive dredging operations and the absence of a policy for the reuse of dredged sludge stored on non-agricultural land. The other represents the rate of cement used in the concrete. The dredged sludge is introduced after heating treatment at 600°C into the cement matrix of an ordinary concrete represents the proposed solution for both problems. In these eco-concretes, the cement has been replaced by treated dredged sludge at different percentages (5-10-20%) with a similar amount of water. Physical measurements and mechanical tests like shrinkage, absorption, and ultrasonic pulse velocity indicated dependence on substitution under dilution effect. Thermogravimetric analysis like the produced portlandite rate indicates a lack of reactive silica to supply the pozzolanic reaction. The results reveal that the substitution of 5% of cement by treated sludge leads to an appropriate concrete and minimizes the siltation effect.

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MOHAMED AZIZ Chikouche , , (2021), Valorization of Heat Treated Dredged Sludge in the Cement Matrix of Ordinary Concrete, Annales de Chimie - Science des Matériaux, Vol:45, Issue:3, pages:251-257, IIETA

The silting-up of dams and the cement level used in concrete represent a very significant environmental problem. In this work, we propose the solution to these environmental damages. This solution consists in the introduction of dredged sludge after heating treatment, as a cement substitute in ordinary concrete. Different percentages of cement (5-10-20%) have been replaced by dredged sludge, with the same W/C ratio and without excess vibration. Physical measures like subsidence (which goes from 75mm for a reference, to 60mm for a concrete with 20% dredged sludge) and shrinkage have revealed dependence on substitution under the effect of dilution. The compressive strength decreased with the incorporation of the treated sludge. It decreases from 41Mpa for the reference concrete, to 39Mpa for a concrete with 5% substitution, to reach 30Mpa for a concrete with 20% substitution in 28 days as an example. Thermogravimetric analysis indicates a lack of reactive silica to supply the pozzolanic reaction. The portlandite rate curves produced by modified cement concrete are lower than the reference concrete. The results reveal that the substitution of 5% of cement by dredged sludge leads to an appropriate concrete. This percentage can increase to 10% with the use of admixtures, which leads to decrease the level of cement and minimize the siltation effect.

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MOHAMED AZIZ Chikouche , ,(2021), Introduction of Dredged Sludge in Ordinary Concrete Matrix,14th International congress on advances in civil engineering,Istanbul, Turkey

La diminution de l’exploitation des ressources naturelles, est la préoccupation majeure des pays. Le dépôt des sédiments au fond des barrages empêchant la bonne exploitation de ceux-ci et l’engloutissement des minerais naturels par l’industrie cimentaire sans deux problèmes que tous les pays cherchent à réduire. Dans ce travail, nous proposons une solution à ces deux problèmes environnementaux. Elle consiste à introduire les sédiments déposés, comme remplaçant du ciment dans un béton ordinaire. Après un traitement thermique, les sédiments ont été substituées au ciment à différents pourcentages (5-10-20%) pour la confection d’un béton ordinaire. Ces bétons ont été comparés à un béton témoin, avec le même rapport E/C et sans excès de vibrations. Les mesures physiques comme l’affaissement, le retrait et l’absorption capillaire ont révélées une dépendance à la substitution sous l’effet de la dilution. Quant à la résistance à la compression, elle diminue suite à l’absorption d’une partie de l’eau d’hydratation du ciment par les sédiments dragés. L’analyse thermogravimétrique, indique un manque de silice réactive pour alimenter la réaction pouzzolanique. Les courbes de la quantité de portlandite produites et l’eau non évaporable par les bétons modifiés, sont inférieures à celles du béton de référence. Les constatations de cette étude annoncent qu’une substitution de 5% de ciment par les sédiments, produit un béton acceptable. Ce pourcentage peut contribuer à la réduction du niveau de ciment dans le béton ordinaire et minimiser l’effet de sédimentation des barrages.

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MOHAMED AZIZ Chikouche , ,(2021), Elaboration d’un éco-béton avec des sédiments de dragage,Premier Séminaire National sur les Eco-Matériaux et Conception des Eco-Structures,Oran, Algeria

The aim of this paper is to investigate the effect of hot climate on the performance of roller-compacted concrete which is used for pavement. Mixes were placed in different environments in order to simulate the local climate conditions. Large-scale test has been carried out to assess the mechanical strength development in function of curing mode, temperature treatment and silica fume addition. Compressive strength, splitting tensile strength, shrinkage and capillary absorption of water were evaluated according to the program tests. The main results showed that an increase in temperature (over 40°) affects negatively the physical and mechanical properties due to malformation of hydration products, while cure methods showed a higher efficiency of the improvement in such properties. However, it should be noted that the wet cure method gave the best results as it provides appropriate and effective conditions to the hydration process. Regarding the effect of silica fume addition, even an improvement in the compressive strength was confirmed; however, it has a negative impact on the shrinkage.

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ABDELAZIZ Meddah , Miloud BEDDAR , MOHAMED AZIZ Chikouche , Moussa deghfel, , (2019), Experimental study on the effect of hot climate on the performance of roller-compacted concrete pavement, Innovative Infrastructure Solutions, Vol:5, Issue:1, pages:5, Springer

Les usines de ciments engloutissent des milliards de tonnes de terres non renouvelables d’argile et de calcaire. En parallèle les barrages voient leur capacité de stockage se réduire à cause de la sédimentation. Ces deux problèmes environnementaux, nous ont incité à introduire la boue de dragage du barrage K’sob de M’sila dans la matrice cimentaire d’un béton ordinaire. L’étude minéralogique de cette boue, a révélée une fraction phylliteuse comportant les trois groupes d’argiles avec 11% de kaolin, 20% d’illite et 12% de chlorite. Chimiquement, les éléments majeurs sont la silice à hauteur de 48% et l’oxyde de calcium avec un pourcentage de 19%. Après l’étape de séchage, le broyage a été mené afin d’aboutir à une finesse voisinant les 7000 [g/cm²]. La boue de dragage à subit un traitement thermique à 600 °C avec un temps de maintien de cinq heures et une vitesse de chauffage 20 °C/min. Cette boue traitée thermiquement a été substituée au ciment à différents pourcentages (5-10-20%) dans la matrice cimentaire d’un béton ordinaire nommé (Bt5, Bt10, Bt20) respectivement. Ces bétons ont été comparés à un béton témoin (Bt0) élaboré par un ciment de type CEMI. Trois types d’essais ont été menés pour apprécier les caractéristiques des differents bétons : essais physiques (Affaissement, retrait), essai mécanique (résistance à la compression) et essai thermogravimétrique ( taux de portlandite produite). Les essais physiques ont démontré que le béton témoin (Bt0), ainsi que le béton (Bt5) enregistrés le même taux d’affaissement avec 7,5 [cm], cette mesure décroit avec l’introduction de la boue de dragage traitée pour atteindre 6[cm] pour le béton Bt20. Ce décroissement est dû à la diminution du taux de ciment et au pouvoir de la boue traitée à absorber l’eau destinée à l’hydratation du ciment. Le retrait sous l’effet de la substitution à augmenter de 105% pour le béton Bt5, 110% pour le béton Bt10 et 119% pour Bt20 après 90 jours. Cette augmentation est due au manque des produits d’hydratation qui ont pour effet de réduire les pores dans le béton. La résistance à la compression à 28jours de durcissement comme exemple a révélée une résistance à la compression de 41Mpa pour le béton témoin. Cette valeur diminue pour le Bt5 enregistrant 39Mpa, le Bt5 donne 38Mpa le Bt10 développe la résistance la plus faible 30Mpa. Sachant qu'à 600°C, il y a que le kaolin qui se transforme en métakaolin, cette boue traitée thermiquement ne développe pas un caractère pouzzolanique élevé à cause d’un manque de silice et d’alumine réactive dans les ciments modifiés. Les mêmes cubes utilisés dans l’essai précédent ont été broyés afin de calculer le taux de portlandite produite par les différents ciments. Le CEMI a enregistré à tout âge les valeurs les plus supérieures. Cette diminution des valeurs pour les ciments modifiés, ne reflète pas un caractère pouzzolanique, sinon on aurait des résistances à la compression supérieures. Sur la base des de ces résultats expérimentaux obtenus, on peut dire que le béton Bt5 est le plus proche par ces caractéristiques au béton Bt0. Mais, avec l’adjonction d’adjuvant, on peut éliminer plus de boue est ainsi utilisé 10% de boue de dragage.

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MOHAMED AZIZ Chikouche , ,(2019), Confection d’un béton ordinaire avec l’introduction d’une boue de dragage,LES PREMIÈRES JOURNÉES D'ETUDES TECHNOLOGIQUES SUR LES MATÉRIAUX DE CONSTRUCTION,Sétif, Algeria

The aim of this work is to better understand the physical and chemical phenomena involved in hydrated mix (clinker + addition) during the natural carbonation process, to characterize cement with supplementary cementitious materials (SCMs) under various curing environment. The prepared cement pastes were characterized by thermogravimetric analysis. The results showed a considerable influence of the environment on the properties of mortars and cement and a perfect correlation between compressive strength, natural carbonation, nonevaporable water, and portlandite content. It was observed that the reduction of the curing period makes the mortars more sensitive. The kinetics of process was evaluated from Ca(OH)2 content and nonevaporable water contained in mortars. These two parameters reflect the hydration progress of the water/cement ratio studied. The weight loss due to Ca(OH)2 decomposition, calculated by DTA/TG analysis, shows the effect of the pozzolanic reaction and the natural carbonation. The supplementary cementitious materials (SCMs) play a considerable role in the slowing down of the aggression environment.

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Mohammed BENCHEIKH , Saida BOUALLEG , Larbi BELAGRAA , MOHAMED AZIZ Chikouche , Daoudi Aziz, , (2017), The Combined Effect of the Initial Cure and the Type of Cement on the Natural Carbonation, the Portlandite Content, and Nonevaporable Water in Blended Cement, Advances in Materials Science and Engineering, Vol:2017, Issue:1, pages:17 pages, Hindawi

This study aims to produce an eco-cement by using heat treated dam’s sludge as an additive to clinker. Different heat treatment cycles were applied to the dam’s sludge: three temperatures selected in the range between the dehydroxylation and decarbonation temperatures (600, 700 and 800 °C) reached by adopting different heating rates (5, 10 and 20 °C/min). The analysis of DRX, DSC–TG, FTIR results show that the heat treatment cycles let to the change of the sludge structure allowing its use as a pozzolanic additive to produce cements. The optimal heat treatment cycle is 600 °C with a holding time of 5 h and a heating rate 20 °C/min. Normalized mortars have been designed using modified cements constituted by 5% of gypsum, different percentage of heat treated sludge (5–10% and 15%) and clinker. The compressive strengths at 28 days lead to the choice of blending 85% clinker, 10% heat treated sludge and 5% gypsum to produce modified cements. The influence of the thermal activation of the dam’s sludge on the technical properties such as normal consistency, fineness, setting time, heat of hydration, compressive strength have been investigated and tests were conducted according European standards. Results reveal that heat treatment at 600 °C with a rate of 20 °C/min conducts to an activated sludge with no emission of carbon dioxide and the higher strength resistance when added to clinker at 10%. However, whatever the fineness or the rate of heat treatment, the percentage of kaolinite (11%) existing in the natural sludge is not sufficient to develop by heat treatment at 600 °C hydration products allowing significant improve of mechanical resistance of modified cements by comparison to CEMI.

Citation

MOHAMED AZIZ Chikouche , Mekki BIBI , Elhem Ghorbel, , (2016), The possibility of using dredging sludge in manufacturing cements: Optimization of heat treatment cycle and ratio replacement, Construction and Building Materials, Vol:106, Issue:1, pages:330-341, sciencedirect

Les régions à climat aride ou semi-aride en Algérie sont prédominées par des fortes pentes et sont en majorité constituées d’un substrat de roches tendres. Cette nature lithologique est chaque jour agressée par l’érosion hydrique et éolienne, la désertification,...etc. Ces conditions favorisent le dépôt des boues dans les retenues et les barrages. Dans cette étude on propose d’incorporer la boue de dragage du barrage ksob dans les ciments en substitution partielle du clinker. Cette incorporation n’est pas immédiate, des cycles thermiques ont été appliqués à la boue de dragage afin d’optimiser son effet pouzzolanique. Il en ressort que le cycle optimal est de 600°C avec un temps de maintien de 5h est une vitesse de montée en température de 20°C/mn.

Citation

MOHAMED AZIZ Chikouche , ,(2014), Elaboration d’un ciment avec une boue de dragage du barrage K’sob (M’sila-Algérie),32èmes Rencontres de l’AUGC,Orléans,France

In Algeria, arid and semi-arid climate regions are predominated by steep slopes and soft rocks, this lithology is daily attacked by erosion of water, wind, desertification and overgrazing. These effects encourage the deposition of sludge in the reservoirs and dams. In this study, we are proposing to incorporate the mud from K'sob dam to product cements in partial substitution of clinker. However, this incorporation is not immediately because the hydraulic ability of mud. The heat treatment was selected from DSC-TG analysis and our selections of temperatures are for every test respectively, 600 °C, 700 °C and 800 °C, with different increase of heating such as 5(°C /min), 10(°C /min) and 20(°C /min). After these steps the treated sludge has been mixed with the clinker from the M'sila (Lafarge Group) cement factory and gypsum (10% mud, 85% clinker and 5% gypsum) to make cements. Treated sludge have a good pozzolanic activity index and modified cement a good workability, also with the application of a treatment rate of (20 °C/min) allowed us to appreciate the brutal change in structure of kaolinite and transformation to metakaolinite to create an active pozzolan. Resistance of cement with sludge heated of 800 °C in an increasing of heating 20 °C/min in 28 day is 44 (Mpa) although, in the same condition the resistence of CEMI is 45 (Mpa).

Citation

MOHAMED AZIZ Chikouche , ,(2014), Valorization of sludge dredging in the manufacture of cement,International symposium on environmentally friendly concrete –ECO-Crete,Reykjavik, Iceland

Ce travail s’inscrit dans le cadre de recherche des ajouts capables d’être mélangés au clinker afin de donner naissance à un ciment performant. L’ajout est une marne argileuse très répondue dans la région de M’sila utilisée dans la poterie locale. Après calcination à différentes températures de 600°C et 800°C, les nouveaux ciments, ont des résistances caractéristiques appréciables grâce à une activité pouzzolanique majeure. La surface spécifique ainsi que les composants chimiques jouent un rôle déterminant dans l’augmentation du mouillage des grains de ciments, ce qui engendre un temps de prise réduit

Citation

MOHAMED AZIZ Chikouche , ,(2013), Valorisation d’une marne argileuse comme ajout dans les matériaux cimentaires.,31èmes Rencontres de l’AUGC,Cachan,France

This work is an experimental approach based on the method of experimental plans to determine a specific formulation of a resin concrete. In this study, an unsaturated polyester resin (thermosetting resin) was used with two types of mineral fillers (dune sand and crushed sand), and with the addition of a marble powder to ensure the continuity of the particle size mixing granular. The lack of the methods for developing this kind of composite materials, had led us to perform an initial experimental approach to define the experimental field, that is to say determine the mass proportions of the various compounds of mixture of our study. In the second approach, we have established and implemented fully experimental plans with three factors namely: Factor 1: sand, factor 2: resin, factor 3: marble powder. Test results being the density of polymer concrete and the mechanical resistances. Finally, multi-parameters regression allowed us to determine predictive mathematical models for the different responses of the study. Tests results showed that at three days we got a tensile strength of about 16 MPa with a resin concrete density of 1.9 g/cm3. This shows the advantages of this material.

Citation

MOHAMED AZIZ Chikouche , , (2012), Experimental Plans Method to Formulate a Resin Concrete, Journal of Civil Engineering and Architecture, Vol:6, Issue:11, pages:1385–1392, David Publishing Company

This work lies within the general scope of the valorization of local materials, having for interest the improvement of the physicochemical and mechanical characteristics of the products resulting from recovery entering the clothes industry of the elements of structures and construction. The principal goal relates to the valorization of mud of dredging of the stopping 'Ksob – Algeria'. The mud and the abundant red argillaceous marl in the area, contain kaolin and iolite. These clays are respectively calcited with 750 and 780 °C and are mixed with the clinker in order to study their influences on the properties of cementing materials. Compared with a Portland cement, it is noted, that with each increase in the rate of addition, a reduction in the calcium oxide rate and a growth of the silica rate. The various results of the tests of compression show that standard cement R10 has a good resistance in compression, at 28 days, it is about 42 to 43 MPa, that of Portland cement is 44 MPa whereas, for the concretes, resistances in compression observed exceed the 50 MPa. These results put forward the influence of the sandy and muddy clay additions, on the properties of cementing materials, thus showing the economic and environmental interest of the substitution of the clinker by the burnt clays.

Citation

Mekki BIBI , MOHAMED AZIZ Chikouche , K. Ait tahar, , (2008), Influence des ajouts d'argiles gréseuses ou/et vaseuses sur les propriétés des matériaux cimentaires, Materiaux & Techniques, Vol:96, Issue:4, pages:165, EDP SCIENCES S A