Local Deformation of Compacted Soil in Triaxial Compression Tests Using PIV Analysis

Due to many cases of embankment failures reported in recent years, our society requires high-level stability of embankments. For this reason, it is necessary to make a detailed examination on deformation and strength characteristics of compacted soil used for soil structures. Authors have developed a triaxial testing apparatus for the rotated specimen method (RSM), thereby developing a system that enables us to measure volume changes and local deformations of partially saturated soil. In this paper, we examined the effects of variations in degrees of compaction and in compacted soil layers on local deformation and strength characteristics of the compacted soil in a systematic and experimental manner.