Drained residual shear strength is applicable to slopes containing preexisting shear surfaces and preexisting landslides. Laboratory ring shear testing by various researchers suggest the possibility of strength gain along preexisting shear surfaces which had ...

The paper describes a constant volume ring shear apparatus that allows the measurement of the undrained peak and residual shear strengths of cohesive soils. The undrained peak and residual strengths are applicable to seismic stability evaluations of slopes ...

Results of torsional ring shear tests on cohesive soils reveal that the drained residual strength is related to the type of clay mineral and quantity of clay-size particles. The liquid limit is used as an indicator of clay mineralogy, and the clay-size fraction ...

The main factor affecting the drained residual strength measured in the Bromhead ring shear apparatus is the magnitude of wall friction developed along the inner and the outer circumferences of the confined specimen. A new specimen container is proposed for ...

A new test procedure is presented that yields drained residual strengths that are in excellent agreement with field case histories.

Investigation of the decrease of foundation clay shear strength from fully softened to residual after cyclic loading of reservoir filling and emptying of the San Luis Dam.