Wang, W;
Cheng, D;
Coop, MR;
Yuan, B;
(2023)
Experimental Study of the Micro and Macro Scale Compression Behavior of a Sand Immersed in a Viscous Liquid.
Géotechnique Letters
, 13
(2)
pp. 91-96.
10.1680/jgele.22.00132.
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Abstract
Pore fluids with different viscosities can exist in soils. While the effects of pore fluids have been investigated at the macro-scale, little is known about how they might affect the micromechanics. A novel apparatus allowing a single particle to be crushed while immersed in a liquid was built here. With the help of a high-speed microscope camera, the crushing processes of single silica sand particles immersed in glycerine were captured and the breakage modes were clarified. The immersion in glycerine leads to stronger particles with higher strains at failure compared with immersion in water or exposure to air. Moreover, the results of constant rate strain oedometer tests revealed that saturation in glycerine made the sample significantly stiffer in compression as a result of less particle breakage compared with that in water or under dry conditions. The lower particle breakage at the macro-scale appeared to correspond to the higher strengths measured at the micro-scale.
| Type: | Article |
|---|---|
| Title: | Experimental Study of the Micro and Macro Scale Compression Behavior of a Sand Immersed in a Viscous Liquid |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1680/jgele.22.00132 |
| Publisher version: | https://doi.org/10.1680/jgele.22.00132 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | failure laboratory tests multiple-scale behaviour sands single particle breakage |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10169623 |
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