COMPARISON OF SHEAR STRENGTH PARAMETERS OF BLACK COTTON SOIL WITH EFFECT OF RELATIVE COMPACTION

Civil Engineering

In this paper the shear strength parameters of Highly cohesive soils is discussed. A comparison of shear strength parameters is presented between the direct shear test and UU _triaxial compression test based on relative compaction. Most of the engineering design methods and parameters of structure on soil have been developed for ideal soil, such as expansive clay which mostly deviates from the reality by atmospheric changes. In Bharuch region of Gujarat mostly Black cotton soil is available which are one of the expands during the rainy seasons and shrinks during the summer seasons . In this paper the shear strength characteristics of Black cotton soil from Bharuch region of Gujarat were performing the Direct shear test and triaxial compression test on compacted specimens based on different range of relative compaction. Shear strength parameters were determined for different relative compaction of 90%,92.5%, 95%,97.5% and 100%. From experimental investigation Black cotton soil for different relative compaction increases the cohesion and decreases the friction angle.

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