Particle breakage and deformation of carbonate sands with wide range of densities during compression loading process |
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| Authors: | Yang Xiao Hanlong Liu Qingsheng Chen Qifeng Ma Yuzhou Xiang Yingren Zheng |
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| Institution: | 1.State Key Laboratory of Coal Mine Disaster Dynamics and Control,Chongqing University,Chongqing,China;2.Key Laboratory of New Technology for Construction of Cities in Mountain Area,Chongqing University,Chongqing,China;3.School of Civil Engineering,Chongqing University,Chongqing,China;4.Department of Civil and Environmental Engineering,National University of Singapore,Singapore,Singapore;5.Logistic Engineering University of PLA,Chongqing,China |
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| Abstract: | In this technical note, evolutions of the particle size distribution, particle breakage, volume deformation and input work of carbonate sands with varying relative densities were investigated through performing a series of one-dimensional compression tests. Loading stress levels ranged from 0.1 to 3.2 MPa. It was found that the initial relative density could greatly affect the magnitude of particle size distribution, particle breakage, volume deformation and input work. Particularly, it was observed that the specimen at a lower relative density underwent much more particle breakage than that at a higher relative density. This could be attributed to the change of the coordination number with the initial density. However, a unique linear relationship between the particle breakage and input work per volume could be obtained, which is independent of the initial relative density. |
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