Disturbed state concept and non-isothermal shear strength model for unsaturated soils

Abstract Shear strength of unsaturated soils is an important engineering property that required for addressing geotechnical problems, the prediction which remains to be a challenging task design engineers due complex interaction problem. This study presents new shear equation based on micromechanical model and disturbed state concept soils. The original point this considering solid contact area ratio was neglected in most existing equations. Using proposed model, non-linear relationship between matric suction, saturation degree, are described. Validation verified against experimental data several current models six different types results indicate has good performance predicting soils, generally better than other models. In response varying climatic conditions, analytical then extended consider effect temperature comparison predicted measured carried out compacted silt three temperatures. show capable accurately changes as function temperature.