EXPERIMENTAL STUDY ON STRENGTH PARAMETERS OF CORAL SAND BY AUTOMATIC DIRECT SHEAR DEVICE

Abstract

Some experimental studies indicate that coral sand has not only internal friction angle but also apparent cohesion due to the characteristic of heterogeneous size of coral sand that shows the grain interlocking between the particles. In this study, the authors used an auto direct shear test device to carry out shearing tests of coral sand with different relative densities, to investigate changes of the shear strength behavior and strength parameters of the coral sand. The experimental results on changes of strength parameters according to different relative densities are shown and analyzed.