Huang Z., Zhu Z., 2018, Experimental Study on the Strength Variation of Unsaturated Cohesive Soil in Red Bed with Water Content, Chemical Engineering Transactions, 66, 505-510.
The shear strength parameter of rock and soil is the basis of engineering design. As the rock-soil environment is ever-changing, geotechnical parameters that are obtained at a certain point of time can represent no other than the geotechnical condition in a specific environment. If engineering design is conducted by using geotechnical shear strength parameters without considering the environmental impact (especially aquatic impact), it may cause serious consequences. To research on the relationship between residual cohesive soil in red bed with water content, we collected cohesive soil from different sites to conduct indoor direct shear tests of undisturbed soil samples from the same field. The remolded cohesive soil samples were prepared for another direct shear test and the unconsolidated and unstrained triaxial test. Meanwhile, the change law of the relation between water content and shear strength of ordinary cohesive soil is compared with our result by curve fitting. Through this method, we obtained the relations between water content and shear strength.
