抄録
A comprehensive series of triaxial compression tests was carried out on undisturbed samples of Weathered Bangkok Clay. These tests included (i) anisotropic consolidation under different stress ratios (ii) undrained tests and (iii) drained tests.A yield locus for volumetric strain is established for the Weathered Clay which separates the states for which the volumetric strain is small from those for which the volumetric strain is large. The strain paths followed during anisotropic consolidation are made up of two straight lines with different slopes. One corresponds to the case inside the yield locus and the other corresponds to the case outside. (dυ/dε)-η vs η relationships are found to be different for both cases.From a series of undrained tests carried out on samples consolidated to pre-shear consolidation pressures less than the maximum past pressure, the effective stress paths in (q, p) plot are found to be approximately parallel to the q-axis and the constant shear strain contours are found to be nearly parallel to the p-axis. The results of undrained and fully drained tests on Weathered Clay consolidated to the normally consolidated states are presented and discussed.
