Date of Publication :8th May 2024

Abstract:Prior to the construction of infrastructure works, the reuse of site materials for construction requires soil with good characteristics (physical and mechanical). To avoid construction problems, soil treatment techniques are often used to improve the inadequate geotechnical properties of the soils encountered on site for a given function in the structure. Clay materials are often complex natural mixtures of minerals whose grain size and physical, chemical and mechanical properties often vary. Treatment by substitution of a fraction of an inert material such as sand is an appropriate solution for considering the re-use of clay soils in construction projects. The aim of this experimental study is to investigate the influence of the type and percentage of sand used on changes in the physical and mechanical characteristics of a clay. The results obtained show that the treatment carried out by adding sand has a positive influence on the physical and mechanical characteristics of the clay studied. The addition of sand reduces plasticity and improves the compaction characteristics and shear parameters of the mixes studied.

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