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Volume 35 Issue 12
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XU Ri-qing, CHANG Shuai, LI Xue-gang, LU Jian-yang. Quantitative method for crushing of granular soils based on discarding parameters[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(12): 2179-2185.
Citation: XU Ri-qing, CHANG Shuai, LI Xue-gang, LU Jian-yang. Quantitative method for crushing of granular soils based on discarding parameters[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(12): 2179-2185.
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Quantitative method for crushing of granular soils based on discarding parameters

  • 1. Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China;
    2.Key Laboratory of Soft Soils and Geoenvironmental Engineering, Ministry of Education, Zhejiang University, Hangzhou 310058, China

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  • Received Date: May 14, 2013
  • Published Date: November 30, 2013
    Graphical Abstract
    • Abstract
  • Taking fraction as analysis object, the crushing of granular soils is divided into three stages. Based on this, new concepts of discarding ratio Rk and weighted discarding ratio Bd are proposed for the crushing of a single fraction and granular soils as a whole respectively. And their theoretical computing methods are put forward based on the simplified hypothesis of geometric progressional distribution. By investigating the collected test data of particle crushing for 21 granular soil samples from references, it is found that the relationship between Bd and #x003c3;3 is linear for different granular soils with varying values of #x003c3;3 in research ranges. In addition, there exist significant turning points of slope in such linear relationship for most test results. Considering the combined effects of confining pressure, strength of mother rock and original grain composition, it is concluded that the variation of Bd is generalized for the particle breakage of limestone, breccia and sandstone. By sorting out the weighted discarding ratio Bd and the breakage factor Bg of the collected test results for different granular soil samples, it is indicated that the relationship between Bd and Bg is exponential. Finally, it is pointed out that the proposed quantitative method for the crushing of granular soils based on the discarding parameters has its own characteristics and advantages, which has broad research prospects.
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    • References (20)
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