Calibration of an Advanced Constitutive Model Through Direct Shear Test Results
In many geotechnical problems, failure conditions involve the formation of a narrow shear band where shear strains localize. In this study, the thickness of the shear bands was indirectly determined based on the results of constant normal load direct shear (CNL) tests carried out on sand specimens reconstituted at three different relative densities. The adopted procedure also allows to evaluate the soil deformations within the shear band and, thus, to correctly locate the critical state line in the compressibility plane.