Exploring the micromechanical behaviour of sand-rubber mixtures using X-ray micro-tomography

Zhuang Cheng; Jianfeng Wang; Wei Li

doi:10.1051/epjconf/202124911009

Exploring the micromechanical behaviour of sand-rubber mixtures using X-ray micro-tomography

Zhuang Cheng^*
, Jianfeng Wang
, Wei Li

^*Corresponding author for this work

Department of Architecture and Civil Engineering

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

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Abstract

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 sand-sand 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. © The Authors, published by EDP Sciences, 2021

Original language	English
Title of host publication	Powders & Grains 2021 – 9th International Conference on Micromechanics on Granular Media
Editors	M.A. Aguirre, S. Luding, L.A. Pugnaloni, R. Soto
Publisher	EDP Sciences
DOIs	https://doi.org/10.1051/epjconf/202124911009
Publication status	Published - 2021
Event	9th International Conference on Micromechanics on Granular Media, Powders and Grains 2021 - Virtual, Online, Argentina Duration: 5 Jul 2021 → 6 Aug 2021 https://www.epj-conferences.org/articles/epjconf/abs/2021/03/contents/contents.html

Publication series

Name	EPJ Web of Conferences
Volume	249
ISSN (Electronic)	2100-014X

Conference

Conference	9th International Conference on Micromechanics on Granular Media, Powders and Grains 2021
Place	Argentina
City	Virtual, Online
Period	5/07/21 → 6/08/21
Internet address	https://www.epj-conferences.org/articles/epjconf/abs/2021/03/contents/contents.html

Funding

This study was supported by the General Research Fund No. CityU 11213517 from the Research Grant Council of the Hong Kong SAR, Research Grant No. 51779213 from the National Science Foundation of China, and the BL13W beamline of the Shanghai Synchrotron Radiation Facility (SSRF).

Publisher's Copyright Statement

This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

RGC Funding Information

RGC-funded

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10.1051/epjconf/202124911009

221402703.pdfFinal Published version, 454 KBLicence: CC BY

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Cheng, Z., Wang, J., & Li, W. (2021). Exploring the micromechanical behaviour of sand-rubber mixtures using X-ray micro-tomography. In M. A. Aguirre, S. Luding, L. A. Pugnaloni, & R. Soto (Eds.), Powders & Grains 2021 – 9th International Conference on Micromechanics on Granular Media Article 11009 (EPJ Web of Conferences; Vol. 249). EDP Sciences. https://doi.org/10.1051/epjconf/202124911009

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title = "Exploring the micromechanical behaviour of sand-rubber mixtures using X-ray micro-tomography",

abstract = "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 sand-sand 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. {\textcopyright} The Authors, published by EDP Sciences, 2021",

author = "Zhuang Cheng and Jianfeng Wang and Wei Li",

year = "2021",

doi = "10.1051/epjconf/202124911009",

language = "English",

series = "EPJ Web of Conferences",

publisher = "EDP Sciences",

editor = "M.A. Aguirre and S. Luding and L.A. Pugnaloni and R. Soto",

booktitle = "Powders \& Grains 2021 – 9th International Conference on Micromechanics on Granular Media",

address = "France",

note = "9th International Conference on Micromechanics on Granular Media, Powders and Grains 2021 ; Conference date: 05-07-2021 Through 06-08-2021",

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Cheng, Z , Wang, J & Li, W 2021, Exploring the micromechanical behaviour of sand-rubber mixtures using X-ray micro-tomography. in MA Aguirre, S Luding, LA Pugnaloni & R Soto (eds), Powders & Grains 2021 – 9th International Conference on Micromechanics on Granular Media., 11009, EPJ Web of Conferences, vol. 249, EDP Sciences, 9th International Conference on Micromechanics on Granular Media, Powders and Grains 2021, Virtual, Online, Argentina, 5/07/21. https://doi.org/10.1051/epjconf/202124911009

Exploring the micromechanical behaviour of sand-rubber mixtures using X-ray micro-tomography. / Cheng, Zhuang ; Wang, Jianfeng; Li, Wei.
Powders & Grains 2021 – 9th International Conference on Micromechanics on Granular Media. ed. / M.A. Aguirre; S. Luding; L.A. Pugnaloni; R. Soto. EDP Sciences, 2021. 11009 (EPJ Web of Conferences; Vol. 249).

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

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AB - 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 sand-sand 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. © The Authors, published by EDP Sciences, 2021

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Exploring the micromechanical behaviour of sand-rubber mixtures using X-ray micro-tomography

Abstract

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Publisher's Copyright Statement

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GRF: Towards an In-depth Understanding of the Pile Installation Mechanism in Crushable Soils and the Post-installation Soil Ageing Effects

Cite this

Exploring the micromechanical behaviour of sand-rubber mixtures using X-ray micro-tomography

Abstract

Publication series

Conference

Funding

Publisher's Copyright Statement

RGC Funding Information

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Projects

GRF: Towards an In-depth Understanding of the Pile Installation Mechanism in Crushable Soils and the Post-installation Soil Ageing Effects

Cite this