EPJ Web Conf.
Volume 249, 2021Powders & Grains 2021 – 9th International Conference on Micromechanics on Granular Media
|Number of page(s)||4|
|Published online||07 June 2021|
Exploring the micromechanical behaviour of sand-rubber mixtures using X-ray micro-tomography
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: email@example.com
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
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