For a glacial stiff clay (l p = 12%, ’ p = 3000 kPa), the shape of the nonlinear peak-strength…
For a glacial stiff clay (lp = 12%, ’p = 3000 kPa), the shape of the nonlinear peak-strength failure envelope is defined by rn = 0.8. The friction angle ' of the clay composition determined from a series of drained triaxial compression tests on reconstituted normally consolidated specimens is 28″. The residual friction angle ‘ determined from drained reversal direct shear tests on remolded precut specimens is 20″. (a) Compute the peak drained shear strength in a direct shear test of a laboratory specimen that is reconstituted from the glacial clay and normally consolidated to 120 kPa. For an effective stress stability analysis (ESSA) of an existing natural slope, at the bottom of a slice on which ’m = 120 kPa, compute the shear strength available for stability if (b) there is no preexisting continuous plane of discontinuity but the clay contains a random system of microfissures, and (c) there is a major shear zone along which there have been 3m of previous shear displacement May 22 2022 08:24 AM
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