The shear strength analyses of soil with various compactions under vertical load in direct shear test

ABSTRACT: One of the oldest tests to determine the shear strength of soil is direct shear test. With regard to this test, the stresses on a surface which failure occurred are controlled during the test directly. The purpose of compaction is soil density increment because of more compact of soil particles and reduction of empty space of inter granular. There are many different methods for compaction. Various compactions are applied in many researches which is more close to workshop conditions. In this paper, we tried to obtain the shear strength of soil under vertical load due to drained direct shear test by various compactions and also to evaluate compactionʹs effect on final shear strength. The unit failure line obtained for the samples of different compaction at the end of shear tests.