Study on Deformation Characteristics of Silty Clay by Seepage Consolidation and Direct Shear Tests

In order to meet needs of engineering construction,seepage consolidation and direct shear tests of surface soil from a high-tech zone in a city were carried.The indicators about the basic physical properties of the soil were determined,and called as silty clay in the test.In the one-dimensional seepage consolidation test,tested compression coefficient of the silty clay is 0.38 MPa-1,tested compression index of it is 0.28,it was identified as neutral compressive soil,and the deformation curves and vertical strain under pressure at all levels were obtained.In the direct shear test,the shear strength of the silty clay under different vertical pressures and its gotten cohesive strength and internal friction angle were determined.These tests provided the basic parameters of soil for the engineering construction and settlement analyses of buildings in the region.