Abstract
The dynamic strength by cyclic loading testing is compared with the static strength by monotonic loading testing using triaxial and torsional simple shear tests as for cyclic number, shear strength, relative density of specimen, confining pressure and initial shear stress. The results show that during an undrained cyclic loading test, the increase in the cyclic number is accompanied by rising axial strain and a rapid buildup of the porewater pressure to between 90% and 100%, but that liquefaction or flow failure does not occur. The cyclic shear stress ratio obtained from a torsional simple shear test is smaller than that obtained from a triaxial test, regardless of the mean principal stress or initial shear stress.
