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Volume 31 Issue 5
Oct.  2018
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Journal of Southwest Jiaotong University  > 2018  >  53(5): 1033-1038.
WANG Jinshu, WANG Shiming, HONG Meiling, LI Yongzhi, WU Guang, LI Lin, ZHANG Jilong. Correlation Analysis between Clay Mineral Composition and Shear Strength[J]. Journal of Southwest Jiaotong University, 2018, 53(5): 1033-1038. doi: 10.3969/j.issn.0258-2724.2018.05.021
Citation: WANG Jinshu, WANG Shiming, HONG Meiling, LI Yongzhi, WU Guang, LI Lin, ZHANG Jilong. Correlation Analysis between Clay Mineral Composition and Shear Strength[J]. Journal of Southwest Jiaotong University, 2018, 53(5): 1033-1038. doi: 10.3969/j.issn.0258-2724.2018.05.021
shu

Correlation Analysis between Clay Mineral Composition and Shear Strength

doi: 10.3969/j.issn.0258-2724.2018.05.021
  • Received Date: 15 May 2017
  • Publish Date: 01 Oct 2018
    Abstract
  • The influence of mineral composition on soil shear strength was investigated in this study. Using scanning electron microscopy and X-ray diffraction measurements, the composition and microstructure of pure clay minerals was obtained. Single-component clay samples were manually prepared with different initial water contents, and direct shear tests were performed to analyse the influence of moisture content on the cohesive force and internal friction angle of single mineral viscous soil. The results show that the cohesion and friction angle of kaolinite decrease monotonically with an increase in water content. Illite and montmorillonite exhibit peak cohesion when the water content is 18% and 25%, respectively. When the moisture content is approximately 20%, the maximum internal friction angle for montmorillonite appears.

     

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