A Cyclic Cndrained Triaxial Test with Mean Principle Stress Constant for Estimation of Liquefaction Resistance of Improved Soils

Abstract

Although a cyclic undrained triaxial test with constant cell pressure is the most popular laboratory test method for estimating liquefaction resistance of improved soil by chemical grouting and unsaturated soils, it is assumed that underestimation of liquefaction strength was reported due to necking of the specimen at extension side. In order to solve these problems, cyclic undrained triaxial tests under mean principle stress p constant condition for improved soil by chemical grouting and unsaturated soils were carried out in this study. And then, the results from these tests were compare with the result of usual liquefaction test by cyclic triaxial test apparatus.