Modified Equation of Shear Strength with Respect to Saturation

Unsaturated soil shear strength is a significant topic in geotechnical engineering. The measurement of unsaturated properties such as and matric suction could be costly, hard, time-consuming, often impractical to obtain. purpose this research propose new model for predict the by using degree saturation directly because water easy More specifically, study focused on Bishop’s theory van Genuchten’s soil–water characteristic curve describe effect strength. was expressed function degree, residual saturation, effective indices, net normal stress, five parameters. performance presented paper verified fitting it data obtained laboratory tests silty sand including triaxial test test. From these two tests, we variation with under various dry densities. This proposed also validated against results clayed-silty Ankara clay recorded literature. Comparing result one parameter, much more sensitive regarding parameter m, which related material characteristic. comparison between predicted values experimental points particularly fine showed ability applied wide range soils.