| The Shear Strength of Silt (9999) | |||||||||
Abstract | |||||||||
| After the direct shear apparatus had proved itself unsuitable for the investigation of the shear strength of silt, the shear deformation behaviour and the shear parameters were investigated in three disturbed, saturated silts, and in a clay sample, by means of systematic triaxial tests with pore-water-pressure measurements. For drained and undrained triaxial tests the governing stress criterion for the definition of the effective shear parameters was defined. It was possible during the utilization of the natural dilatation of the silt, to develop a method, by means of the evaluation of the course of the stress and also the pore water pressure during the test, which permitted all the shear parameters of silt for both the true and the effective strength to be determined by means of one single test. The true cohesion is a logarithmic function of the water content. The dependence of the shear strength on the water content and the effective normal stress is illustrated in a three-dimensional co-ordinate system. The various angles of friction depend on the plasticity index. (AA) | |||||||||
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