Papers by Karim Ait-mokhtar
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HAL (Le Centre pour la Communication Scientifique Directe), Oct 1, 2000
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Revista de Materiales Compuestos
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Water Supply, 2017
Water resources are economically and environmentally the most valuable for countries affected by ... more Water resources are economically and environmentally the most valuable for countries affected by aridity. This study is to identify the factors influencing the quality of the waters of the aquifer system of the Great Sebkha of Oran, one area that is already in a stress situation. The determination of the origin of the salinity of the waters was approached from an analysis of the chemical type. Water mineralization is mainly governed by the phenomena of dissolution and precipitation of minerals (calcite, dolomite, anhydrite, gypsum and halite).
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Construction and Building Materials, 2015
Abstract An experimental program was carried out to study the influence of spent foundry sand (SF... more Abstract An experimental program was carried out to study the influence of spent foundry sand (SFS) as partial replacement for fine aggregates (natural sand) on two grades of concrete mixtures. Two control concrete mixtures (M20 & M30) were designed to have 28-day compressive strength of 30 MPa and 40 MPa. Then, fine aggregate (natural sand) was replaced with five percentages (0%, 5%, 10%, 15%, 20%) of SFS by weight. Comparative performance of both types of concrete (M20 & M30) was investigated by measuring compressive strength, splitting tensile strength, modulus of elasticity, chloride permeability, and ultra sonic pulse velocity up to the age of 365 days. Test result indicate a marginal increase in strength and durability properties of plain concrete by inclusion of SFS as a partial replacement of fine aggregate. Further, influence of incorporating spent foundry sand is more prominent on M20 grade of concrete as it enhances the strength and durability properties better than M30 grade of concrete.
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ABSTRACT Publisher : MEDACHS Interreg IIIB Atlantic Space - Project N° 197
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The Journal of Solid Waste Technology and Management
The main objective of this paper is to investigate whether stabilization solidification by hydrau... more The main objective of this paper is to investigate whether stabilization solidification by hydraulic binders (e.g. Portland cement) can be used as a solution of a particular waste: an oily petroleum sludge originated from petroleum storage tanks. An example of an Algerian refinery is taken for this purpose. After the waste characterization (X-Ray Diffraction (XRD), four mortars were prepared with different content of waste (0%, 3%, 5% and 9%). The increase in the percentage of waste in mortars increases the initial and final setting time and decrease the mechanical strengths. The Toxicity Characteristic Leaching Procedure (TCLP) have shown a low metal leachability.
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Journal of Materials in Civil Engineering, 2016
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Architectural Science Review, 2009
The Ksar of Kenadsa counts among the most important old cities of the south-west region of Algeri... more The Ksar of Kenadsa counts among the most important old cities of the south-west region of Algeria by its cultural and religious dimension, its architectural value and the extent of its urban influence. Ksar has long been held as a functional and culturally radiant regional centre for all the western part of the Maghreb. This formerly powerful and influential centre
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Education, 1993
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Papers by Karim Ait-mokhtar