A MICROSCOPIC CONSIDERATION ON SHEARING CHARACTERISTIC OF DECOMPOSED GRANITE SOIL
1985 Volume 1985 Issue 364 Pages 133-141
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1985 Volume 1985 Issue 364 Pages 133-141
A new preparation method of undisturbed specimen of decomposed granite soil by freezing a block sample is developed. Triaxial and simple shear tests were carried out for undisturbed and compacted specimens. The following results are obtained.
1) The simple shear test results can give the strength parameters of the unsaturated and the saturated specimens at the low pressure. These parameters are valid for the analysis of a slope stability.
2) The relationships between stress, strain and volumetric strain on the undisturbed and compacted specimens are different. This fact, especially concerning the dilatancy characteristics of these samples, is explained by the distribution of pore size and crushing of the particles.
3) The suction in unsaturated specimen is important for the strength.
