Abstract
In order to examine the influence of void ratio on the shear strength and volumetric change of unsaturated sandy soil, unsaturated conventional triaxial compression test with specimens of different initial void ratio was implemented. The test results are as follows. At failure state, relation between net mean principle stress and deviator stress, and between net mean principle stress and void ratio are independent for different initial void ratio. But at critical state, those relations aren't affected by initial void ratio. The difference of deviater stress between at failure and at critical state is linear with the difference of viod ratio between at failure and at critical state, and this relation isn't affected by suction.
