Comparison of Shear Behaviour of sandy soils by Ring-Shear Test with Conventional Shear Tests

Abstract

The relation of shear behaviour of dry Toyoura standard sand between the ring-shear test, triaxial compression test and two types of shear-box tests was compared. Test results shows that the peak internal friction angles from the ring-shear test fitted those from shear-box tests, while there was a certain difference from triaxial compression test. Then, the liquefaction potential of saturated Osaka-group coarse sandy soil by ring-shear test and triaxial compression test was examined. The liquefaction was observed only in the loose state by the triaxial compression test, while it appeared in all three tests by the ring-shear test. The stress paths of liquefaction in the medium and dense state by the ring-shear test is different from liquefaction in the loose state by both tests.