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An investigation of particle breakage in loess

Gao, C; Xu, L; Coop, MR; Huang, C; Zuo, L; (2021) An investigation of particle breakage in loess. Engineering Geology , 286 , Article 106083. 10.1016/j.enggeo.2021.106083. (In press).

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Abstract

The paper presents a detailed experimental investigation of particle breakage in three kinds of loess, i.e., sandy loess, silty loess and clayey loess. It is firstly found that particle breakage can occur within loess in oedometer test, which results in a better-graded soil at the end of the test. Initial breakage stresses for both the silty and clayey loess are less than 0.5 MPa, and about 2 MPa for the sandy loess. The relative breakage (B ) is used to evaluate the particle breakage degree, and it is found that for all the three kinds of loess tested, B increases with the increasing loading stress until it reaches a threshold, after which B tends to keep a constant value. Particles within the loose specimens break more easily than those within the dense ones, especially for the sandy and silty loess. It is also observed that for the specimens reconstituted with previously tested soils, particle breakage degree decreases significantly, which means little particle breakage occurs in the pre-crushed specimens.

Type: Article
Title: An investigation of particle breakage in loess
DOI: 10.1016/j.enggeo.2021.106083
Publisher version: https://doi.org/10.1016/j.enggeo.2021.106083
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.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
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.ucl.ac.uk/id/eprint/10125363
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