Experimental Study on Reconsolidation Volumetric Behavior of Sand-Gravel Composites due to Dynamic Loading

Abstract eng:
A series of tests are performed to illustrate the reconsolidation volumetric behavior of sand-gravel composites after dynamic loading. The results show that, there is a good correlativity between the reconsolidation volumetric strain, the pore water pressure ratio, and the maximal double amplitude shear strain induced by dynamic loading, though the initial effective consolidation pressure has a great effect on the reconsolidation volumetric strain. The reconsolidation volumetric strain is not affected by the characteristic of dynamic loading and reduces with the increase of specimen relative density. Based on the test results of sand-gravel and sand by Ishihara, an experiential relation of reconsolidation volumetric strain of sand-gravel and sand is suggested. The application method of the experiential relation is given for predicting the ground settlement.

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