In this paper, a sustainable approach for reducing lateral displacement in a track by increasing the confining pressure in the track substructure is demonstrated by placing a cellular rubber (tyre) membrane infilled with crushed ballast, as an alternative to a traditional capping layer of compacted granulates. Plate-load tests on a single tyre filled with gravel and subjected to a vertical load were carried out to investigate the interaction between tyre and gravel. A track model with tyre reinforcement was created to evaluate the performance of a tyre-reinforced capping layer under cyclic loading, and a numerical model was developed to determine the benefit that tyres would provide to railway substructure, especially when spent ballast is recycled as capping layer materials.
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August 2019
Research Article|
January 31 2019
Behaviour of a capping layer reinforced with recycled tyres
Qideng Sun, PhD;
Qideng Sun, PhD
Research Associate, Centre for Geomechanics and Railway Engineering, University of Wollongong, Wollongong, NSW, Australia (corresponding author: qs349@uowmail.edu.au)
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Buddhima Indraratna, PhD, FTSE, FIEAust, FASCE, FGS;
Buddhima Indraratna, PhD, FTSE, FIEAust, FASCE, FGS
Professor of Civil Engineering and Research Director, Centre for Geomechanics and Railway Engineering; Program Leader, ARC Centre of Excellence for Geotechnical Science and Engineering, University of Wollongong, Wollongong, NSW, Australia
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Ana Heitor, PhD
Ana Heitor, PhD
Senior Lecturer, Centre for Geomechanics and Railway Engineering; Department of Civil, Mining and Environmental Engineering, University of Wollongong, Wollongong, NSW, Australia
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Publisher: Emerald Publishing
Received:
March 15 2018
Accepted:
September 27 2018
Online ISSN: 1755-0769
Print ISSN: 1755-0750
ICE Publishing: All rights reserved
2018
Proceedings of the Institution of Civil Engineers - Ground Improvement (2019) 172 (3): 127–137.
Article history
Received:
March 15 2018
Accepted:
September 27 2018
Citation
Sun Q, Indraratna B, Heitor A (2019), "Behaviour of a capping layer reinforced with recycled tyres". Proceedings of the Institution of Civil Engineers - Ground Improvement, Vol. 172 No. 3 pp. 127–137, doi: https://doi.org/10.1680/jgrim.18.00030
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