Small and large strain behaviour of an unsaturated compacted silt

Hydro-mechanical behavior from small strain to failure of tuffs amended with dune sand – Application to pavements design in Saharan areas

“…This observation confirms those observed in paragraph 3.2 and allows to conclude that i) when the soil is very wet, the suction values are low, then the confining stress plays a major role and governs the module variation; ii) when the material becomes drier, the suction increases sharply, compared to the confining stress, the soil suction plays a dominant role in the module variation. These results are consistent with those of the literature [36,37,40,55,56].…”

“…The experimental techniques for determining the elastic modulus depend on the level of deformation considered [31]. Many studies have shown that the elastic modules are highly related to the levels of suction or degree of saturation, in addition to other parameters such as the strains level, mean effective stress, deviator stress, relative density, loading history and anisotropy [32][33][34][35][36][37][38][39][40].…”