NASSIMA Bakir

Brahimi Ahmed Omar

Analyse et évaluation de la fragilité sismique d’un mur de soutènement en béton armé avec prise en Compte de l’Interaction Sol-Structure (ISS)

BAFKA Nasr eddine , SAHRAOUI Aissa

CARACTERISATION PHYSIQUE DE LA BOUE DE DRAGAGE DU BARRAGE DE K’SOBE ET TRAITEMENT EVENTUEL AFIN DE L’UTILISER DANS LES TRAVAUX ROUTIERS

BELHOUT Mohamed. , BADJKA Imane.

Etude de l’effet de l’ajout des déchets d’aluminium sur l’amélioration des caractéristiques physiques et mécaniques d’un sol affaissable.

ZEGAAR Nabil , BENZIANE Benallia

Traitement des sédiments du barrage de K’sob en vue de d’améliorer leurs caractéristiques physiques et mécaniques

Saidane Ibtissam , souayb Abd elrazak.

Amélioration des caractéristiques mécaniques des sédiments du barrage de k’sob par un traitement à base de sable dans le but de leur utilisation dans des travaux routiers.

djardali sabrina , chergui nora.

Amélioration des caractéristiques mécanique des sédiments du barrage de k’sob par un traitement dans le but de leur utilisation dans des travaux routiers.

Zemouri nour el houda , Zine khaoula.

Caractérisation mécanique de la vase du barrage de k’sob en vue de sa valorisation dans des travaux routiers.

Megag Hanane

Traitement d'un sol affaissables par un ajout mixte de fibre de verre et de ciment

Yahi Kais

Traitement d'un sol affaissables par de fortes teneurs en déchets de verre

Ghazal Ratiba

Traitement d'un sol affaissables par de fortes teneurs en déchets d'aluminium.

Benyahia Nour el houda

Influence de la teneur en déchet de verre sur le degré de collapse d'un sol affaissable

Djagham Maroua

Influence de l'ajout de déchets de verre sur les caractéristiques physiques d'un sol affaissable

Ferahtia Issam

Amélioration des caractéristiques mécaniques des sols affaissables par l'ajout de déchets de verre

Mezaache Farouk

Amélioration des caractéristiques mécaniques des sols affaissables par l'ajout de déchets d'aluminium

Cette étude évalue l'efficacité des déchets céramiques dans la stabilisation des sols collapsibles. Le matériau étudié est composé de 80% de sable de Boussaâda et 20% de kaolin de Djebel Debbagh. Des échantillons sont préparés avec différentes teneurs en eau (2%, 4%, 6%), énergies de compactage (20, 40, 60 coups), et pourcentages de déchets céramiques finement broyés (4%, 6%, 8%). Le potentiel d'effondrement est évalué par des essais œdométriques. Les résultats démontrent une réduction significative du potentiel d'effondrement après traitement, indiquant une amélioration notable de la stabilité du sol. Cette méthode de stabilisation pourrait s'avérer particulièrement pertinente pour les régions arides et semi-arides, offrant une solution durable pour la valorisation des déchets céramiques et l'amélioration des propriétés géotechniques des sols collapsibles

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Naoui TALLAH , HAMZA Boussahel , NASSIMA Bakir , ,(2024-12-17), CARACTÉRISATION ET TRAITEMENT DES SOLS COLLAPSIBLES DANS LES ZONES ARIDES ET SEMIARIDES À L'AIDE DE DÉCHETS CÉRAMIQUES : UNE ÉTUDE EXPÉRIMENTAL,Le Premier Congrès National sur le Génie Civil et le Logement de Constantine (N2CEHC 2024),Constantine

Abstract

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NASSIMA Bakir , Khadroui seif eddine, ,(2024-12-17), Investigation the behaviour of collapsibility in unsaturated soils susceptible to collapse risk,The first national congress on civil engineering and housing on Constantine.,Constantine, ALGERIE

Passive and active earth pressure on a vertical retaining wall are key parameters in geotechnical design. In this numerical study, the finite element method with OptumG2 software adopting the upper limit of limit analysis approach is used to evaluate the active (Pa) and passive (Pp) pressure under the effect of a strip surcharge behind the wall. The influence of surcharge position and intensity, soil friction angle and interface friction are analyzed. The results show an increase in (Pa) and (Pp) with surcharge intensity. Comparison with analytical solutions validates the method. The geometric and mechanical parameters studied have a significant effect on pressure. This study provides a numerical estimate of pressure in the presence of a strip surcharge for the design of retaining walls.

Citation

Naoui TALLAH , NASSIMA Bakir , ,(2024-12-09), Limit finite element analysis of active and passive earth pressure under the effect of a strip surcharge,The First International Conference on Civil Engineering and Materials Innovation, 1st ICCEMI’24,Mascara

This work explores the characterization and treatment of collapsible soils using ceramic waste and lime. The materials used include sand from Boussaâda, kaolin from Djebel Debbagh, and finely ground ceramic waste. Soil samples, composed of 80% sand and 20% kaolin, are moistened (2%, 4%, 6%), compacted (20, 40, 60 blows), and treated with 4%, 6%, and 8% ceramic waste. Oedometer tests are conducted to evaluate the collapse potential of treated soils. The results show a significant reduction in collapse potential, indicating improved soil stability. This treatment could be beneficial for arid and semi-arid areas.

Citation

Naoui TALLAH , HAMZA Boussahel , NASSIMA Bakir , ,(2024-12-09), Characterization and Treatment of Collapsible Soils in Arid and Semi-Arid Areas Using Ceramic Waste: An Experimental Study,The First International Conference on Civil Engineering and Materials Innovation, 1st ICCEMI’24,Mascara

The soils susceptible to collapse are soils with a porous structure consisting largely of large grains and a small percentage of fine cementation elements. Their moisture content is very reduced because they are located in dry areas, arid and semi-arid. Unsaturated soils with a collapse risk have been a serious concern in geotechnical engineering and provide considerable challenges due to their susceptibility to collapse if moistened, which might result in significant damages. The aim of this work, whose experimental investigation of identification the collapsibility potential of unsaturated soil susceptible to collapse by using the simple consolidation test Jennings and Knight in order to measure the rate at which the collapse potential varies. This experimental investigation used samples of reconstituted soil that are composed of 80% sand and 20% kaolin, compacted with varying energies (15, 30 and 45) hits, and varied moisture contents (2%, 4% and 6%). The experimental results show that our samples exhibited collapsibility with a degree of specimen collapse that was severe and collapse index up to 10%, and that increasing the moisture content and compaction energy reduced the potential of collapsibility to a degree of specimen collapse that was moderate with collapse index less than 6%.

Citation

Seif Eddine KHADRAOUI , NASSIMA Bakir , Asseli Aymen Elouanas, ,(2024-12-09), Identification of the collapse deformation of unsaturated soil susceptible to collapse.,The First International Conference on Civil Engineering And Materials Innovation “1st ICCEMI’24”,Mustapha Stambouli University of Mascara

The soils susceptible to collapse are soils with a porous structure consisting largely of large grains and a small percentage of fine cementation elements. Their moisture content is very reduced because they are located in dry areas, arid, and semi-arid. Unsaturated soils with a collapse risk have been a serious concern in geotechnical engineering and provides considerable challenges due to their susceptibility to collapse if moistened, which might result in significant damages. The aim of this work, whose experimental investigation of moisture content and compaction energy effects on collapse potential of unsaturated soils susceptible to collapse by using the simple consolidation test Jennings and Knight in order to measure the rate at which the collapse potential varies. This experimental investigation used samples of reconstituted soil that are composed of 80% sand and 20% kaolin, compacted with varying energies (15, 30 and 45) hits, and varied moisture contents (2%, 4%, and 6%). The experimental results show that our samples exhibited collapsibility with a degree of specimen collapse that was severe and collapse index up to 9%, and that increasing the moisture content and compaction energy reduced the potential of collapsibility to a degree of specimen collapse that was moderate with collapse index 5.9%.

Citation

Seif Eddine KHADRAOUI , NASSIMA Bakir , Adam Hamrouni, ,(2024-12-04), Experimental Investigation of Moisture Content and Compaction Energy Effects on Collapse Potential of Unsaturated Soils susceptible to collapse.,1er Congrès National en Génie Civil CNGC’24,Echahid Cheikh Larbi Tebessi University - Tebessa

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NASSIMA Bakir , Boussahel Hamza, ,(2024-12-04), Characterization and treatment of collapsible soil in arid and semi arid areas using ceramic wast and lim: an experimental study,1er Congrès national de Génie Civil, Innovation et technologie de pointe.,Tebessa, Algérie

Industrial waste has long posed a critical environmental challenge, as rapid industrialization continues to generate large quantities of by-products that require sustainable management solutions. This study investigates the impact of incorporating industrial waste of aluminum from blast furnaces into collapsible soils on their geotechnical properties. The experimental program evaluates how varying percentages of aluminum waste (5%, 10%, 15%, 20% and 25%) influence Atterberg limits, collapse potential, compaction, California Bearing Ratio (CBR) and shear strength parameters. The findings reveal that the collapse potential of untreated soil decreases markedly from a degree of specimen collapse that was severe to a degree of specimen collapse that was slight when 25% of treatment is added. The shear strength tests demonstrate an increase in cohesion and a reduction in the internal friction angle. Additionally, the liquid limit showed an upward trend, while compaction results indicated a decrease in maximum dry density and an increase in optimum moisture content. CBR results suggest that soil-aluminum waste mixtures are suitable primarily for use in the subgrade layer of pavements. Overall, the reuse of this industrial waste with collapsible soils provides a cost-effective solution for enhancing soil properties, promoting sustainable management of aluminum waste from blast furnaces, reducing natural resource consumption, and minimizing environmental impact through decreased waste retention.

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Seif Eddine KHADRAOUI , NASSIMA Bakir , Hamrouni Adam, Asseli Aymen Elouanas, ,(2024-11-22), Valorization of Industrial Waste for Geotechnical Stabilization: A Sustainable Approach.,2nd International Conference on Trends in Advanced Research,Konya, Turkey

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NASSIMA Bakir , Khadraoui seif eddine, ,(2024-11-13), experimental investigation about the impact of moister content and compaction energies on the collapse deformation of insaturated soil susceptible to collapse,1st National symposium on géoscience and sustainable development,Ouargla, Algérie

Résumé

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NASSIMA Bakir , ,(2024-11-04), MISE EN EVIDENCE PAR L’EXPLORATION DE LA MICROSTRUCTURE DE L’EFFET DU COMPACTAGE ET DU TRAITEMENT SUR L’AMELIORATION DES CARACTERISTQUES MECANIQUE DU SOL AFFAISSABLE.,4th international symposium on construction management and civil engineering,Skikda, Algérie

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NASSIMA Bakir , Allali Ibtissem, ,(2024-11-04), Stabilité dynamique et statyque d'un béton autoplaçant à base de filler de calcaire,4th international symposium on construction management and civil engineering,Skikda, Algérie

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NASSIMA Bakir , Khadraoui Seif eddine, ,(2024-10-30), Investigation of identification the collapse deformation of unsaturated soils susceptible to collapse.,"Civil and mechanial engineering", Doctoral study days,Msila, Algérie

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NASSIMA Bakir , ,(2024-10-30), Etude expérimentale de la caractérisation de la boue de dragage du bararge Ksob en vue de sa valorisation dans des traveaux routiers,"Civil and mechanial engineering", Doctoral study days,Msila, Algérie

Abstrat

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NASSIMA Bakir , Ayadi Billel, ,(2024-10-30), Etude de l'effet des fillers de calcaire sur les propriétes physico_mécaniques d'un béton à base d'agrégats recyclés adjuvantés,"Civil and mechanial engineering", Doctoral study days,Msila, Algérie

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NASSIMA Bakir , Boussahel Hamza, ,(2024-10-30), Characterization and treatment of collapsible soil in arid and semi arid areas using ceramic wast: an experimental study,"Civil and mechanial engineering", Doctoral study days,Msila, Algérie

Cette étude évalue l'efficacité des déchets céramiques dans la stabilisation des sols collapsibles. Le matériau étudié est composé de 80% de sable de Boussaâda et 20% de kaolin de Djebel Debbagh. Des échantillons sont préparés avec différentes teneurs en eau (2%, 4%, 6%), énergies de compactage (20, 40, 60 coups), et pourcentages de déchets céramiques finement broyés (4%, 6%, 8%). Le potentiel d'effondrement est évalué par des essais œdométriques. Les résultats démontrent une réduction significative du potentiel d'effondrement après traitement, indiquant une amélioration notable de la stabilité du sol. Cette méthode de stabilisation pourrait s'avérer particulièrement pertinente pour les régions arides et semi-arides, offrant une solution durable pour la valorisation des déchets céramiques et l'amélioration des propriétés géotechniques des sols collapsibles

Citation

HAMZA Boussahel , Naoui TALLAH , NASSIMA Bakir , ,(2024-10-30), CARACTÉRISATION ET TRAITEMENT DES SOLS COLLAPSIBLES DANS LES ZONES ARIDES ET SEMI-ARIDES À L'AIDE DE DÉCHETS CÉRAMIQUES : UNE ÉTUDE EXPÉRIMENTALE,Journées d’Etude de Génie Civil et Mécanique 2024 « JEGCM24 »,Msila

L'envasement des barrages constitue un défi majeur pour la gestion des ressources en eau, particulièrement dans les régions semi-arides comme l'Algérie, où le barrage de K’sob, situé au nord-est de M’sila, subit des pertes annuelles significatives de volume d'eau. Ce phénomène, causé par une érosion active, nécessite des opérations de dragage fréquentes, qui, bien que nécessaires, engendrent des coûts élevés et des impacts environnementaux préoccupants. Cette étude vise à caractériser les sédiments extraits du barrage de K’sob afin d'explorer leur potentiel de valorisation dans le domaine du génie civil. À travers des analyses physiques et mécaniques, les sédiments ont été classés selon le guide technique GTR (LCPC, SERTA, 2000) en classe A2, correspondant à des limons argileux peu plastiques. Ces caractéristiques indiquent que les sédiments peuvent être utilisés efficacement comme matériaux de remblai ou dans les couches d'assise des infrastructures routières.

Citation

HAMZA Boussahel , Naoui TALLAH , NASSIMA Bakir , ,(2024-10-30), ETUDE EXPERIMENTALE DE LA CARACTERISATION DE LA BOUE DE DRAGAGE DU BARRAGE K’SOB EN VUE DE SA VALORISATION DANS LES TRAVAUX ROUTIERS,Journées d’Etude de Génie Civil et Mécanique 2024 « JEGCM24 »,Msila

envasement des barrages constitue un défi majeur pour la gestion des ressources en eau, particulièrement dans les régions semi-arides comme l'Algérie, où le barrage de K’sob, situé au nord-est de M’sila, subit des pertes annuelles significatives de volume d'eau. Ce phénomène, causé par une érosion actif, nécessite des opérations de dragage fréquentes, qui, bien que nécessaires, engendrent des coûts élevés et des impacts environnementaux Préoccupants. Cette étude vise à caractériser les sédiments extraits du barrage de K’sob afin d'explorer leur potentiel de valorisation dans le domaine du génie civil. À travers des analyses physiques et mécaniques, les sédiments ont été classés. selon le guide technique GTR (LCPC, SERTA, 2000) en classe A2, correspondant à des limons argileux peu plastiques. Ces caractéristiques indiquent que les sédiments peuvent être utilisés efficacement comme matériaux de remblai ou dans les couches d'assise des infrastructures routières.

Citation

NASSIMA Bakir , Naoui TALLAH , HAMZA Boussahel , Seif Eddine KHADRAOUI , Meriem SELMI , ,(2024-10-30), ETUDE EXPERIMENTALE DE LA CARACTERISATION DE LA BOUE DE DRAGAGE DU BARRAGE K’SOB EN VUE DE SA VALORISATION DANS LES TRAVAUX ROUTIERS,Journées d’Etude de Génie Civil et Mécanique 2024 « JEGCM24 »,Université de M’sila

Abstract

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NASSIMA Bakir , ,(2024-10-22), Identification of the collapse deformation of insaturated soil susceptible to collapse,4th international conference on engineering, natural and social sciences,Konya, Turquie

Most developing countries have hot climate, ordinary jobsites characterized by reduced of human resources, equipment and infrastructures. The objective of this article is to make an experimental study of the influence of the hot climate such as that of Algeria, on the different properties of concrete in the fresh state, such as excessive water evaporation from the concrete surface, increased demand for water, increased slump loss corresponding to additional water on job-site, higher plastic shrinkage cracking and difficulty in controlling air content. At the hardened state, we could mention a reduction of strength at 28 days, decreased durability resulting from cracking at long-term period. To show the problems linked to concreting under these conditions and to present the appropriate solutions concrete or mortar can withstand the conditions in which it is implemented. Thus, negative effects caused principally by hot weather concreting motivated the choice of the such study. The research experimental work conditions in which the cementitious matrix was kept concerned two different environments, namely hot and dry climate conditions (t = 40°, h = 0%) alike the climate of the region of M'sila., and that of a medium with a hot and humid environment (t = 40°, h = 100%). The output of the investigation demonstrated the crucial role of the cure method in hot regions. The comparison of results for a reference concrete kept in air without any curing measures with two curing types simulating hot weather environment of the region M’sila was undertaken. These obtained outcome results were discussed based on the influence of climatic conditions to conclude procedures for hot weather concreting and suitable cure methods.

Citation

NASSIMA Bakir , , (2021), Experimental Study of the Effect of Curing Mode on Concreting in Hot Weather, Revue des Composites et des Matériaux Avancés, Vol:31, Issue:4, pages:pp. 243-248., Journal of Composite and Advanced Materials

Soil collapse remains a major issue affecting structural foundations, particularly in arid and semi-arid zones where humidification is a key factor contributing to the collapse. Much research has been devoted to identifying treatment methods which enhance the stability and load bearing capacity of this type of soil. This paper investigates the potential advantages of the addition of milled glass fibers (F�). Soil samples were prepared at different compaction energies and various water contents, then treated with different percentages of milled glass fiber, before being submitted to the simple consolidation odometer test. The results obtained in this study showed that soil samples treated with an optimal dosage of 6% of milled glass fibers compacted at 60 blows and humidified at 6% of moisture content. This represents an improvement in the stability of the soil, reducing the collapse potential (C�) from 11.95% to 1.62%. This treatment method produces soil which can be classified as a moderate risk foundation soil according to the Jennings and Knight evaluation metrics (1975). Keywords: collapsible soils, arid zones, fiberglass, odometer test

Citation

Larbi BELAGRAA , NASSIMA Bakir , ABBECHE Khelifa, Gérard Panczer, , (2020-03-13), Study of the Effect of Waste Glass Fibers Incorporation on the Collapsible Soil Stability Behavior, KnE Engineering, Vol:1, Issue:1, pages:10, KnE Engineering

Abstract The present study is to investigate the physical and mechanical properties of the prepared sand mortars, mainly based on the local Oued Souf sand region south of Algeria, this in accordance with standard sand grading. The principal aim of the research is to replace the restricted fine part between (0.08and 0.16 mm) which is of the order 15% and to substitute it with additions active slag (S) and inert glass powder(GP) with dosages of 5, 10 and 15 % and maintain the rest of the granular fractions of the sand studied fixed. Thus, to see and analyze the influence of these additions on the physical properties and in regards the mechanical performances of confected prepared sand mortars. The results showed the advantageous effect of replacing the said prepared sand with two additions (slag and glass powder) on physical, mechanical properties mortars based on this local sand by improving the performance of these cement products, especially at an optimal percentage of 10%.

Citation

Larbi BELAGRAA , NASSIMA Bakir , Khemissi Bellalmi, Bachir Taallah, Lila Briki, , (2020-01-01), Characterization of a sustainable mortar based on mineral additions and prepared sand, International Conference on Materials & Energy (ICOME’19), Vol:330, Issue:2020, pages:5, Revue des Composites et des Matériaux Avancés

. Collapsible soil presents a porous unsaturated structure, its sudden settlement after humidification, without supplementary charge, can be of a big nuisance for the foundations and therefore for the constructions built on it. To improve its structure and limit its instability, samples of laboratory reconstituted soil, with different percentages of water contents and compacted at different compaction energies, were treated with glass-fiber. The study of the mechanical behavior was performed by oedometer tests. The microstructure was explored by the Scanning Electron Microscope (SEM). The results obtained show clearly the efficiency of the treatment with glass fiber on reducing the collapsibility of such soil.

Citation

NASSIMA Bakir , ,(2019), Experimental study of the effect of the glass fibers on reducing collapse of a collapsible soil.,The 2019 world congress on advences in structural engineering and mechanics ASEM19,Korée

The collapsible soils whose humidification is the main factor of collapse, is the major problem of the foundation soil of the various structures, which are located mainly in the arid and semi-arid zones. Much research has been devoted to the treatment of this type of soil in order to enhance its stability and its bearing capacity. The present paper deals with the influence of the addition of milled glass fibers (Fg) on improving soil stability regarding the collapse. Soil samples were prepared at different compaction energies and various water contents then treated at different percentages of milled glass fiber, to be submitted to the simple consolidation odometer test. The results obtained in this study showed that a treated soil with an optimal dosage of 6% of milled glass fibers, compacted at 60 blows and humidified at 6% of moisture content, gave an improvement of the stability of the soil and a reduction of the collapse potential (Cp) from 11.95% to 1.62%. This let us to conclude that our treated soil is considered as a moderate risk foundation soil according to Jennings and Knight (1975) classification.

Citation

NASSIMA Bakir , Khelifa Abbeche, Gérard Panczer, Larbi Belagraa, ,(2019), Study of the effect of waste glass fibers incorporation on the collapsible soil stability behavior,Remine International Conference RICON 19,University of Beira interior, Portugal

L’étude de l’identification ou du traitement des sols affaissables n’a connu un réel développement qu’aux alentours des années 1980. Ces sols sont du genre non saturée, métastable, qui une fois humidifié sous une certaine charge peuvent subir un effondrement provoquant la ruine de toute construction émergeant de ce type de sol. Les sols effondrables sont localisés dans les régions arides ou semi-arides, présentant donc une faible teneur en eau, et caractérisé par une granulométrie qui présente un faible pourcentage d’éléments fins reliant les gros grains favorisant ainsi l’existence d’une structure lâche à grande porosité. Pour pallier aux problèmes causés par ce type de sol, nous avons proposé une étude expérimentale basée sur l’essai de la double consolidation, et qui présente le traitement du sol à la chaux comme solution afin de diminuer d’une façon considérable le taux d’affaissement, puis nous avons essayé de vérifier, la concordance (si elle existe) des résultats donnés par les deux méthodes d’estimation de l’effondrement celle de la simple et de la double consolidation.

Citation

NASSIMA Bakir , Abbeche Khelifa, abdelazize.meddah@univ-msila.dz, ,(2018-11-28), Etude expérimentale du traitement d'un sol affaissable par la chaux en utilisant la méthode de la double consolidation,Séminaire international de Génie Civil (SIGC 2018),Oran, Algérie

Collapsible soil presents a porous unsaturated structure, its sudden settlement after humidification, without supplementary charge, can be of a big nuisance for the foundations and therefore for the constructions built on it. To improve its structure and limit its instability, samples of laboratory reconstituted soil, with different percentages of water contents and compacted at different compaction energies, were treated with glass-fiber. The study of the mechanical behavior was performed by oedometer tests. The microstructure was explored by the Scanning Electron Microscope (SEM). The results obtained show clearly the efficiency of the treatment with glass fiber on reducing the collapsibility of such soil.

Citation

NASSIMA Bakir , Khelifa Abbeche, Gérard Panczer, , (2017), Experimental study of the effect of the glass fibers on reducing collapse of a collapsible soil., Geomechanics and Engineering, Vol:12, Issue:1, pages:71-3, Techno-Press P.O. Box 33, Yuseong, Daejeon 34186, Korea

Selon l’Eurocode 4, un assemblage mixte est un assemblage d’un élément structural mixte (acier-béton) et de tout autre élément structural, dans lequel les armatures du béton sont destinées à contribuer à sa résistance. Les assemblages mixtes en bâtiment sont, généralement, des assemblages poutre-poutre et des assemblages de type poutre-poteau. Notre contribution consiste à proposer une méthode simplifiée pour le calcul de la rigidité initiale ( Sj,ini ), le moment résistant ultime en flexion ( Mj,Rd ) et la capacité de rotation (fCd ) de ce type d’assemblage mixte. Cette méthode a l’avantage d’être utilisable manuellement par les ingénieurs praticiens. En conclusion générale, nous constatons que la prise en compte de la contribution des armatures longitudinales de la dalle dans la zone d’assemblage et la connexion acier-béton dans la poutre mixte avaient une grande influence sur le comportement flexionnel de l’assemblage mixte (poutre mixte-poteau métallique).--------------------(25 et 26 Novembre 2015) (pp. 5-10).

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Messaoud TITOUM , Azzeddine LAHMADI , NASSIMA Bakir , Aida MAZOZ, ,(2015-10-01), Proposition d’une méthode simplifiée pour le calcul des caractéristiques d’un assemblage mixte (poutre-poteau),Journées d’étude de Génie Civil (JEGC2015),M’sila, ALGERIE

Collapsible soils are defined as unsaturated structures, which can undergo radical rearrangement of its particles and a sharp decrease in volume after wetting with or without load. Most of these soils are loess or eolian deposits constituted of silt and sand which are located in arid or semi-arid area. Southern Algeria is constituted largely of loess formations and is nowadays an area with a high potential for agricultural development. The occupation of this region is at risk of collapse of structures erected on land "Collapsibles". Therefore, we propose treatment solutions which are economic and easy to implement. This paper presents an experimental study of the treatment of collapsible soil which is reconstituted in the laboratory by different contents in lime using the method of double consolidation. Samples of this soil with different moisture contents are compacted with different energy levels. The expected purpose of this study is to reduce the potential of subsidence of these soils to an acceptable level.--------------------(May 20-23, 2015) (page 334).

Citation

NASSIMA Bakir , Azzeddine LAHMADI , Khelifa ABBECHE, ,(2015), Reduction of the settlement of a collapsible soil by the addition of lime, use of the double consolidation method,International Conference on Civil and Environmental Engineering (ICOCEE – CAPPADOCIA 2015),Nevşehir, TURKEY

Cette recherche expérimentale présente un cas de traitement au laboratoire, par différents types de sels, d’une argile expansive prélevée de la zone de Sidi Hadjres, à l’Ouest de M’sila (Algérie). Une série d’essais œdométriques, par la procédure de gonflement libre, est effectuée sur des éprouvettes inondées par différentes solutions en utilisant plusieurs concentrations. Une deuxième série d’essais est réalisée afin d’avoir l’influence du traitement sur l’état de consistance des argiles. Les résultats obtenus montrent une importante efficacité de certains types de sels sur le gonflement libre et l’état de consistance.--------------------(25 et 26 Novembre 2015) (pp. 11-14).

Citation

Azzeddine LAHMADI , Messaoud TITOUM , NASSIMA Bakir , ,(2015), Etude expérimentale de l’influence des sels sur le gonflement et la consistance d’une argile expansive de la région de Sidi Hadjres (Wilaya de M’sila),Journées d’étude de Génie Civil (JEGC2015),M’sila, ALGERIE