HYPERBOLIC STRESS – STRAIN PARAMETERS OF REMOULDED TROPICAL BLACK COTTON SOIL
Publication Date : 01/02/2019
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Abstract :
This paper reports the experimental program and results obtained by performing laboratory direct shear box test on black cotton soil. Hyperbolic stress strain parameters of the soil at different moulding water content (ranging from -4%OMC to +4%OMC) were determined using Duncan – Chang (1970) model. Preliminary index properties test results of the soil show that it was highly plastic soil with liquid limit of more than 50% and plasticity index of 33%. A relationship between cohesion and moulding water content was also formulated in the paper. Finally, the hyperbolic models parameters (i.e. K, n and Rf) determined had been found to conform with those specified in various literatures and they could be used to predict numerically, stress-strain behaviour for the particular tested black cotton soil
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