Experimental Study on Shear Strength of West Sichuan Unsaturated Mixed-Soil

Abstract:

By controlling moisture content to control matrix suction indirectly, three typical unsaturated remolded mixed-soil from west Sichuan are studied by the consolidated untrained triaxial shear test .The test data show that for different kinds of soil samples, the sample with less amount of clay and high content of quartz has bigger internal friction angle relatively, and the sample with hydrophilic mineral and high content of clay has bigger cohesive force. Meanwhile, for the sample without or less hydrophilic mineral, cohesive force is affected mainly by water content, and for the sample with large content of hydrophilic mineral, water content and dry density affect cohesive force together. For a certain sample, the variation of moisture content and dry density affects internal friction angle less, while affects cohesive force more. In addition, the change of internal friction angle resulting from the variation of matrix suction is less, and cohesive force increases as matrix suction increases.

• Periodical: Applied Mechanics and Materials (Volumes 353-356)
• Pages: 772-778
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.353-356.772
• Online since: August 2013
• Authors: Kai Cui, Bang Wen Huang
• Keywords: Matrix Suction, Shear Strength, Unsaturated Mixed-Soil

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