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Geomechanics and Engineering
  Volume 15, Number 1, May20 2018 , pages 687-694
DOI: https://doi.org/10.12989/gae.2018.15.1.687
 


Experimental study on crushable coarse granular materials during monotonic simple shear tests
Sihong Liu, Hangyu Mao, Yishu Wang and Liping Weng

 
Abstract
    To investigate the crushing behaviour of coarse granular materials, a specifically designed, large-scale simple shear apparatus with eight-staged shearing rings was developed. A series of monotonic simple shear tests were conducted on two kinds of coarse granular materials under different vertical stresses and large shear strains. The evolution of the particle breakage during the compression and simple shearing processes was investigated. The results show that the amount of particle breakage is related to the particle hardness and the state of the stresses. The amount of particle breakage is greater for softer granular materials and increases with increasing vertical stresses. Particle breakage may tend towards a critical value during both the compression and the shearing processes. Particle breakage mainly occurs during the processes of confined compression and contraction.
 
Key Words
    simple shear tests; particle breakage; coarse granular materials; compression
 
Address
Sihong Liu, Hangyu Mao and Yishu Wang: College of Water Conservancy and Hydropower, Hohai University, No.1, Xikang Road, Nanjing 210098, China

Liping Weng: Business School of Hohai University, No.1, Xikang Road, Nanjing 210098, China
 

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