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Settlement behaviour of hybrid asphalt-ballast railway tracks

Yu, Z, Connolly, DP, Woodward, PK and Laghrouche, O (2019) Settlement behaviour of hybrid asphalt-ballast railway tracks. Construction and Building Materials, 208. ISSN 0950-0618

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The use of structural asphalt layers inside ballasted railway tracks is attractive because it can increase track bending stiffness. Therefore, for the first time, this paper investigates the long-term settlement characteristics of asphaltic track in the presence of a subgrade stiffness transition zone. Phased load cyclic compression laboratory tests are performed on a large-scale hybrid asphalt-ballast track, supported by subgrade with varying stiffness. It is found that an asphaltic layer acts as a bridge to shield the subgrade from high stresses. It is also found that the asphalt reduces track settlement, and is particularly effective when subgrade stiffness is low.

Item Type: Article
Uncontrolled Keywords: 0905 Civil Engineering, 1202 Building
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Engineering
Publisher: Elsevier
Related URLs:
Date Deposited: 07 Apr 2022 10:00
Last Modified: 07 Apr 2022 10:00
DOI or ID number: 10.1016/j.conbuildmat.2019.03.047
URI: https://researchonline.ljmu.ac.uk/id/eprint/16613
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