Development of inter-particle friction in a railway ballast

被引：21
|
作者：
Wong, C. P. Y. [1 ]
Coop, M. R. [1 ]
机构：
[1] UCL, London, England
来源：
GEOTECHNIQUE LETTERS | 2020年 / 10卷 / 04期
基金：
英国工程与自然科学研究理事会;
关键词：
friction; laboratory tests; particle-scale behaviour; SURFACE-STRUCTURE; CONTACT-BEHAVIOR; DEFORMATION;
D O I：
10.1680/jgele.19.00080
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
A detailed experimental programme investigated how the coefficient of friction at particle contacts for a typical UK railway ballast varied during cyclic loading. Despite a decrease of roughness, the friction coefficient increased steadily, stabilising in the region of tens of cycles. In contrast to previous work on the contact behaviour of sands, water inundation caused a significant but reversible decrease of the coefficient, while the generation of a significant amount of abraded fines did not affect it, nor did the load level.
引用
收藏
页码：535 / 541
页数：7
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