Influence of initial relative density and initial effective confining pressure on reliquefaction characteristics of Shirasu

In order to investigate the influence of the initial relative density and initial effective confining pressure on reliquefaction characteristics of disturbed Shirasu, cyclic triaxial tests were performed on soil samples prepared with different initial relative densities and effective confining pressures. It was found from these tests that the reliquefation strength was higher than the first liquefaction strength. Furthemore, the reliquefaction strength increased with increases in initial relative density, and was affected by the initial effective confining pressure of above 98 kPa.

Liquefaction

Reliquefaction

Shirasu

Initial relative density

Initial effective confining pressure