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Soil Mechanics and Foundation Engineering by P. Purushothama Raj

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9

Shear Strength of Soils

CHAPTER HIGHLIGHTS

Stress–strain curve – Mohr–Coulomb failure criterion – Peak and residual shear strength – Strain- and stress-controlled tests – Laboratory measurement of shear strength: drainage condition, direct shear, triaxial shear, unconfined compression, ring shear tests, choice of rate of deformation – Field measurement of shear strength: vane shear test, bore hole shear device – Shear strength of saturated cohesive soil – Pore pressure coefficients – Sensitivity of cohesive soils – Shear strength of granular soils

9.1 INTRODUCTION

The capability of a soil to support a loading from a structure, or to support its own overburden, or to sustain a slope in equilibrium is governed by its shear strength.

The shear ...

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