The Experts below are selected from a list of 306 Experts worldwide ranked by ideXlab platform
Abderrahmane Ghrieb - One of the best experts on this subject based on the ideXlab platform.
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Valorisation of Dune Sand Treated with Lime and Scrap Tyre Rubber Powder as a Road Foundation Material.
2020Co-Authors: Melik Bekhiti, Abderrahmane Ghrieb, Zaitri RebihAbstract:The purpose of the work presented in this paper is the treatment of Dune Sand; which is abundant in the region of Djelfa (Algeria), with different lime and tyre rubber powder in order to valorise them in road construction. Several steps were considered in this research. A method of blend formulation has been proposed which is based on stabilization of the studied Sand using a hydraulic binder (lime) and scrap tyre rubber powder with different percentages. For each mixture, the optimum Proctor, shear strength, immediate and immersion CBR index, compressive strength and tensile strength were determined. After that, an analysis of the results was made to examine the influence of treatment agents on the characteristics of the mixtures. The results show that the replacement of lime and tyre rubber powder at optimum content has a positive impact on the physical and mechanical behaviours of the treated Dune Sand mixtures; increases its compressive and tensile strengths, improves its cohesion and increases its immediate and immersion CBR indexes. The selected optimum formulation has sufficient performances to be used as road material.
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Crushed concrete waste influence on Dune Sand mortar performance. Contribution to the valorization
Materials Today: Proceedings, 2020Co-Authors: Yacine Abadou, Abderrahmane Ghrieb, Rosa BustamanteAbstract:Abstract In the region of South Algeria, there is a significant presence of quality aggregates. However, excessive use of these materials can result in significant environmental impacts. For these reasons, it would be advisable to use other substitute materials such as Dune Sand and construction waste to preserve these resources and avoid excessive pollution of the environment. The aim of this work is to valorize the concrete waste to make it a useful material to correct the Dune Sand granulometry, in order to manufacture mortars with satisfactory performances in terms of consistency and mechanical strength. To obtain this objective, a methodology for the formulation of mixtures based on the progressive substitution of Dune Sand by the studied waste was adopted. Several tests were then carried out to examine the effect of the incorporation of waste on the main properties of the mortar fresh and in the cured state. These characteristics were compared to those of the control mortar (consisting only of alluvial Sand, cement and water). The results obtained show that the inclusion of the waste used can improve the workability and compactness of the mortars studied and increase their compressive strengths in the short and long term. Moreover, it has been observed that its incorporation induces a decrease in tensile strength.
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Use of crushed clay brick waste as Dune Sand granular corrector in mortar manufacturing
2019Co-Authors: Abderrahmane Ghrieb, Yacine AbadouAbstract:The present study aims to investigate the possibility of using crushed clay brick waste as Dune Sand granular corrector in mortar manufacturing. The mixtures composition method is based on the progressive substitution of Dune Sand with crushed waste at different weight contents; 5, 10, 15, 20 and 25%. The effect of these recycled materials was studied in an experimental programme through several tests. The performance of these modified mortars was evaluated in terms of strength, workability, water absorption, and resistance to sulfuric acid attack. The results obtained show that the incorporation of the used waste has a significant influence on the behavior of the mortar, in the fresh state and the hardened state. Further to this, it has also been observed that its inclusion with certain percentages makes it possible to obtain performances comparable to those of the alluvial Sand-based mortar, which demonstrates its effectiveness in improving the various properties of the mortar.
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Ceramic waste influence on Dune Sand mortar performance
Construction and Building Materials, 2016Co-Authors: Yacine Abadou, Ratiba Mitiche-kettab, Abderrahmane GhriebAbstract:Abstract The present paper studies the properties of mortar made with Dune Sand from Djelfa, an Algerian desert region. It aims at evaluating the effect of the incorporation of recycled fine aggregates obtained from crushed earthenware (floor and wall tiles) and sanitary ware. The effect of these recycled materials was studied in an experimental programme through several tests taking into consideration the durability of these modified mortars to the chemical attack of sulphuric and hydrochloric acid, and evaluated with respect to workability and mechanical properties in different curing environments as compressive and flexural strength, and modulus of elasticity. The results obtained mention the ability to evaluate the influence of the two types of ceramic waste in Dune Sand mortar. These modified mortars present the best mechanical performance under different curing environments. In addition, the compressive and flexural strength of ceramic waste mortar increases with ceramic waste content to be optimum at 50% for the control mortar, as well as the modified mortar based on Dune Sand with 50% addition of ceramic sanitary is the one with the best performance of all the modified mortars particularly in terms of higher strength and lower water absorption. Moreover, the results show that the durability of the modified mortars is more resistant to the sulphuric and hydrochloric acid solution attack.
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Stabilization and Utilization of Dune Sand in Road Engineering
Arabian Journal for Science and Engineering, 2013Co-Authors: Abderrahmane Ghrieb, Ratiba Mitiche-kettab, Abderrahim BaliAbstract:The aim of the work presented in this paper is the valorization of Dune Sand, which is abundant in Djelfa (Algeria). This study consists of valorizing a local material in road construction. Several stages were considered in this investigation. A method of formulation of the mixtures has been proposed, which is based on the stabilization of the studied Sands using a hydraulic binder and a granular corrector. For each mixture, the optimum Proctor, the compressive strength with and without immersion and the tensile strength were determined. After that, an analysis of the results was made to examine the influence of the Sand origin and the stabilization agent proportion on the physical and mechanical characteristics of mixtures. The stabilized Sands were classified according to current standards; the optimal formulations were then selected, on which additional tests were carried out. The results obtained show that the formulations selected have sufficient performances to be used in road foundation layers.
Weihua Wang - One of the best experts on this subject based on the ideXlab platform.
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behavior of concrete filled steel tubular stub columns and beams using Dune Sand as part of fine aggregate
Construction and Building Materials, 2014Co-Authors: Lin-hai Han, Weihua Wang, Yihai JiaAbstract:Abstract The concrete using the Dune Sand as fine aggregate is usually regarded as having low workability and low ductility, although it has certain economic advantages. Using the Dune Sand concrete as the filling substance of tubular structures is possibly a way to use this kind of material, for the outer tube can provide confinement to its core concrete and thus enhance the ductility of the Dune Sand concrete. This paper is an attempt to investigate the behavior of concrete-filled steel tubular (CFST) stub columns and beams using Dune Sand as part of the fine aggregate. A series of CFST stub columns and CFST beams with 10% fine aggregate replacement ratio of Dune Sand are tested. For the stub column specimens, the main test parameters for stub column specimens are the steel ratio, the concrete strength and the cross-sectional type. For the beam specimens, the test parameter is the cross-sectional depth. The failure modes, load-deformation relation and the strain distribution of composite stub column and beam specimens are reported, and the strength and the ductility of test specimens are discussed using various indexes. The formulae for the compressive and flexural strength of normal CFST members are tentatively used to predict the strength of composite members using Dune Sand.
Yacine Abadou - One of the best experts on this subject based on the ideXlab platform.
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Crushed concrete waste influence on Dune Sand mortar performance. Contribution to the valorization
Materials Today: Proceedings, 2020Co-Authors: Yacine Abadou, Abderrahmane Ghrieb, Rosa BustamanteAbstract:Abstract In the region of South Algeria, there is a significant presence of quality aggregates. However, excessive use of these materials can result in significant environmental impacts. For these reasons, it would be advisable to use other substitute materials such as Dune Sand and construction waste to preserve these resources and avoid excessive pollution of the environment. The aim of this work is to valorize the concrete waste to make it a useful material to correct the Dune Sand granulometry, in order to manufacture mortars with satisfactory performances in terms of consistency and mechanical strength. To obtain this objective, a methodology for the formulation of mixtures based on the progressive substitution of Dune Sand by the studied waste was adopted. Several tests were then carried out to examine the effect of the incorporation of waste on the main properties of the mortar fresh and in the cured state. These characteristics were compared to those of the control mortar (consisting only of alluvial Sand, cement and water). The results obtained show that the inclusion of the waste used can improve the workability and compactness of the mortars studied and increase their compressive strengths in the short and long term. Moreover, it has been observed that its incorporation induces a decrease in tensile strength.
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Use of crushed clay brick waste as Dune Sand granular corrector in mortar manufacturing
2019Co-Authors: Abderrahmane Ghrieb, Yacine AbadouAbstract:The present study aims to investigate the possibility of using crushed clay brick waste as Dune Sand granular corrector in mortar manufacturing. The mixtures composition method is based on the progressive substitution of Dune Sand with crushed waste at different weight contents; 5, 10, 15, 20 and 25%. The effect of these recycled materials was studied in an experimental programme through several tests. The performance of these modified mortars was evaluated in terms of strength, workability, water absorption, and resistance to sulfuric acid attack. The results obtained show that the incorporation of the used waste has a significant influence on the behavior of the mortar, in the fresh state and the hardened state. Further to this, it has also been observed that its inclusion with certain percentages makes it possible to obtain performances comparable to those of the alluvial Sand-based mortar, which demonstrates its effectiveness in improving the various properties of the mortar.
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Experimental investigation on the carbonation properties of Dune Sand ceramic waste mortar
Journal of Engineering Design and Technology, 2018Co-Authors: Yacine Abadou, Ratiba Kettab, Abderrahmane GhreibAbstract:Purpose This paper aims to analyse the behaviour of Dune Sand mortars with the addition of ceramic waste. The objective of improving the performance of these modified mortars was evaluated in terms of accelerated carbonation performance. Design/methodology/approach The effect of these recycled materials was studied in an experimental programme through several tests. The carbonation depth was determined using a classical phenolphthalein test. The mass fractions of Ca(OH)2 and CaCO3 were calculated using thermogravimetric analysis, water absorption occurring through capillary action and open porosity, and the mechanical characteristics were measured after subjecting the materials to wetting–drying cycles. Findings The results show that using ceramic waste provides better performance in terms of water absorption by capillary action, open porosity and carbonation penetration. Originality/value This research is a study of the incorporation of ceramic waste up to 10 per cent in Dune Sand mortar. The choice of using ceramic waste to produce Dune Sand mortars has benefits from economic, environmental and technical points of view and offers a possibility for improving the durability of mortars.
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Ceramic waste influence on Dune Sand mortar performance
Construction and Building Materials, 2016Co-Authors: Yacine Abadou, Ratiba Mitiche-kettab, Abderrahmane GhriebAbstract:Abstract The present paper studies the properties of mortar made with Dune Sand from Djelfa, an Algerian desert region. It aims at evaluating the effect of the incorporation of recycled fine aggregates obtained from crushed earthenware (floor and wall tiles) and sanitary ware. The effect of these recycled materials was studied in an experimental programme through several tests taking into consideration the durability of these modified mortars to the chemical attack of sulphuric and hydrochloric acid, and evaluated with respect to workability and mechanical properties in different curing environments as compressive and flexural strength, and modulus of elasticity. The results obtained mention the ability to evaluate the influence of the two types of ceramic waste in Dune Sand mortar. These modified mortars present the best mechanical performance under different curing environments. In addition, the compressive and flexural strength of ceramic waste mortar increases with ceramic waste content to be optimum at 50% for the control mortar, as well as the modified mortar based on Dune Sand with 50% addition of ceramic sanitary is the one with the best performance of all the modified mortars particularly in terms of higher strength and lower water absorption. Moreover, the results show that the durability of the modified mortars is more resistant to the sulphuric and hydrochloric acid solution attack.
Yihai Jia - One of the best experts on this subject based on the ideXlab platform.
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behavior of concrete filled steel tubular stub columns and beams using Dune Sand as part of fine aggregate
Construction and Building Materials, 2014Co-Authors: Lin-hai Han, Weihua Wang, Yihai JiaAbstract:Abstract The concrete using the Dune Sand as fine aggregate is usually regarded as having low workability and low ductility, although it has certain economic advantages. Using the Dune Sand concrete as the filling substance of tubular structures is possibly a way to use this kind of material, for the outer tube can provide confinement to its core concrete and thus enhance the ductility of the Dune Sand concrete. This paper is an attempt to investigate the behavior of concrete-filled steel tubular (CFST) stub columns and beams using Dune Sand as part of the fine aggregate. A series of CFST stub columns and CFST beams with 10% fine aggregate replacement ratio of Dune Sand are tested. For the stub column specimens, the main test parameters for stub column specimens are the steel ratio, the concrete strength and the cross-sectional type. For the beam specimens, the test parameter is the cross-sectional depth. The failure modes, load-deformation relation and the strain distribution of composite stub column and beam specimens are reported, and the strength and the ductility of test specimens are discussed using various indexes. The formulae for the compressive and flexural strength of normal CFST members are tentatively used to predict the strength of composite members using Dune Sand.
Ratiba Mitiche-kettab - One of the best experts on this subject based on the ideXlab platform.
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Effect of Dune Sand Incorporation on the Physical and Mechanical Behaviour of Tuff: (Experimental Investigation)
Geotechnical and Geological Engineering, 2018Co-Authors: Elhadj Guesmia Daheur, Said Taibi, Idriss Goual, Ratiba Mitiche-kettabAbstract:The present paper focuses on the effect of the addition of Dune Sand on the physical and mechanical properties of the tuff. The percentage of Sand added to tuff ranged between 0 and 100%. The geotechnical characteristics of Sand and tuff as well as those of their different mixtures were first determined. Then, a series of mechanical tests (unconfined compressive strength UCS and triaxial shear test) were performed on compacted samples at modified proctor optimum (MPO). The results showed that the tuff–Dune Sand mixtures are denser than the basic materials with lower optimum water content at MPO. It was noticeable that the plasticity index decreased with the increasing percentage of Sand added, due to the contribution of the fine particles of the Sand. However, Californian Bearing Ratio, suction, UCS, maximum deviatory strength and secant modulus increased with the increasing percentage of Sand added. They reach their maximum value when the portion of Sand incorporated ranged between 25 and 35%. The optimal formulation of 65% tuff and 35% Dune Sand was selected to meet economic and environmental constraints. This analysis showed that the Dune Sand incorporation improved the geotechnical characteristics and the mechanical behavior of the tuff. It provided a better elaborated material; satisfying the standards requirements, which could be exploited for the construction of Saharan roads.
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Ceramic waste influence on Dune Sand mortar performance
Construction and Building Materials, 2016Co-Authors: Yacine Abadou, Ratiba Mitiche-kettab, Abderrahmane GhriebAbstract:Abstract The present paper studies the properties of mortar made with Dune Sand from Djelfa, an Algerian desert region. It aims at evaluating the effect of the incorporation of recycled fine aggregates obtained from crushed earthenware (floor and wall tiles) and sanitary ware. The effect of these recycled materials was studied in an experimental programme through several tests taking into consideration the durability of these modified mortars to the chemical attack of sulphuric and hydrochloric acid, and evaluated with respect to workability and mechanical properties in different curing environments as compressive and flexural strength, and modulus of elasticity. The results obtained mention the ability to evaluate the influence of the two types of ceramic waste in Dune Sand mortar. These modified mortars present the best mechanical performance under different curing environments. In addition, the compressive and flexural strength of ceramic waste mortar increases with ceramic waste content to be optimum at 50% for the control mortar, as well as the modified mortar based on Dune Sand with 50% addition of ceramic sanitary is the one with the best performance of all the modified mortars particularly in terms of higher strength and lower water absorption. Moreover, the results show that the durability of the modified mortars is more resistant to the sulphuric and hydrochloric acid solution attack.
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Stabilization and Utilization of Dune Sand in Road Engineering
Arabian Journal for Science and Engineering, 2013Co-Authors: Abderrahmane Ghrieb, Ratiba Mitiche-kettab, Abderrahim BaliAbstract:The aim of the work presented in this paper is the valorization of Dune Sand, which is abundant in Djelfa (Algeria). This study consists of valorizing a local material in road construction. Several stages were considered in this investigation. A method of formulation of the mixtures has been proposed, which is based on the stabilization of the studied Sands using a hydraulic binder and a granular corrector. For each mixture, the optimum Proctor, the compressive strength with and without immersion and the tensile strength were determined. After that, an analysis of the results was made to examine the influence of the Sand origin and the stabilization agent proportion on the physical and mechanical characteristics of mixtures. The stabilized Sands were classified according to current standards; the optimal formulations were then selected, on which additional tests were carried out. The results obtained show that the formulations selected have sufficient performances to be used in road foundation layers.
