Open AccessDevelopment of inter-particle friction in a railway ballast
Author(s) -
Cacin P. Y. Wong,
M. R. Coop
Publication year - 2020
Publication title -
géotechnique letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.845
H-Index - 28
ISSN - 2045-2543
DOI - 10.1680/jgele.19.00080
Subject(s) - ballast , friction coefficient , geotechnical engineering , particle (ecology) , materials science , surface finish , coefficient of friction , work (physics) , dynamical friction , composite material , geology , engineering , mechanical engineering , oceanography
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.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom