https://doi.org/10.1051/epjconf/202124911009
Exploring the micromechanical behaviour of sand-rubber mixtures using X-ray micro-tomography
1
Department of Architecture and Civil Engineering, City University of Hong Kong, 999077, Hong Kong, China
2
Faculty of Engineering, China University of Geosciences, 430074, Wuhan, China
* Corresponding author: zhuacheng2-c@my.cityu.edu.hk
Published online: 7 June 2021
The micromechanical behaviour of sand-rubber mixtures (SRMs) under monotonic triaxial shear were investigated using X-ray micro-tomography. The localisation of sand particle rotations that occurred in a pure sand sample under shear was inhibited in the sand mixed with 30% rubber grains by mass. Meanwhile, the SRMs exhibited an evolution of sand-sand contact coordination number that is not negatively correlated with sample porosity, dramatically different from that was observed in pure sands. Substantially increasing anisotropy degree of sand-rubber contacts compared with minor changes of sandsand contact fabric was observed, implying the increasingly important role of sand-rubber contacts in the transmission of deviatoric loads as the shear of SRMs progressed.
A video is available at https://doi.org/10.48448/dhvs-1868
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
