Shear strength of Baise r emolded expansive soil

Based on different initial water contents and dry weight densities,the peak intensity and the residual strength of Baise compacted remolded expansive soils under different vertical pressures are studied;and its action mechanism of shear strength is analyzed shear.The research indicates:along with the increase of dry weight density,the peak strength of soil increases,the residual strength changes little;along with the increase of overburden loading,the shear strength of soil increases obviously,which shows that using physical treatment technology filling expansive soil subgrade can ensure its strength and stability.The residual strength of remolded expansive soil is not related to its structure,stress history,and initial water content,it is only decided by clay particle shape,size,content and mineral components.