DefinePK

Abstract

The liquefaction is an important phenomenon of mechanical instability of sandy soil leading to a catastrophic failure; this mechanism has been constantly revised to include new parameters that may control the mechanical instability under static or dynamic loadings. Such instability may be manifested by severe damage or large displacement. Civil engineer considers the important parameter of the shear strength for better design of structures founded on soil vulnerable. The accurate determination of the critical or residual shear strength has been a major challenge to geotechnical engineering. Therefore, it is essential to determine the main parameters that may significantly control the shear strength and to provide a broad understanding of soil behavior under undrained conditions. In this work, the main objective is to experimentally analyze the mechanical behavior under undrained conditions reconstituted loose and medium dense specimens of terrigenous silica sand with different almond content. This present paper is an attempt to describe experimentally the mechanical behavior of soils with low plastic silty sand and represent the variation of the critical shear strength based on different parameters, the density state as well as the equivalent void ratio. The last characteristic seems rightly the vulnerability of the material to instability.