Laboratory assessment of rubber grid-reinforced ballast under impact testing

Siddiqui, AR; Indraratna, B; Ngo, T; Rujikiatkamjorn, C

Laboratory assessment of rubber grid-reinforced ballast under impact testing

Siddiqui, AR Indraratna, B

Ngo, T Rujikiatkamjorn, C

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Publisher:: ICE PUBLISHING
Publication Type:: Journal Article
Citation:: Geotechnique Letters, 2023, 13, (2), pp. 1-22
Issue Date:: 2023-04-17

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Field	Value	Language
dc.contributor.author	Siddiqui, AR
dc.contributor.author	Indraratna, B https://orcid.org/0000-0002-2346-8250
dc.contributor.author	Ngo, T
dc.contributor.author	Rujikiatkamjorn, C https://orcid.org/0000-0001-8625-2839
dc.date.accessioned	2023-12-18T09:54:41Z
dc.date.available	2023-12-18T09:54:41Z
dc.date.issued	2023-04-17
dc.identifier.citation	Geotechnique Letters, 2023, 13, (2), pp. 1-22
dc.identifier.issn	2049-825X
dc.identifier.issn	2045-2543
dc.identifier.uri	http://hdl.handle.net/10453/173864
dc.description.abstract	This study presents the use of rubber grids (RGs) fabricated from end-of-life conveyor belts (i.e. discarded from the mining industry) to improve the performance of ballast tracks. The square apertures of these recycled rubber sheets were cast using a waterjet cutting process. A series of large-scale impact tests were performed on ballast specimens stabilised with three different grids of varied effective area ratios (KA.eff) to evaluate their effectiveness in mitigating the applied impact forces, in relation to both displacement and breakage of the ballast aggregates. Smart Ballast particles with motion-sensing capabilities were adopted to monitor the interaction between the grid and ballast assembly. The impact test results indicate that the inclusion of a RG decreases the deformation and breakage of ballast as well as reduces its vibrations. This study demonstrates that these recycled RGs with optimum effective area ratios can be more effective than conventional polymer geogrids, apart from the obvious environmental benefits.
dc.language	English
dc.publisher	ICE PUBLISHING
dc.relation.ispartof	Geotechnique Letters
dc.relation.isbasedon	10.1680/jgele.22.00145
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	0403 Geology, 0905 Civil Engineering, 0909 Geomatic Engineering
dc.subject.classification	4005 Civil engineering
dc.subject.classification	4019 Resources engineering and extractive metallurgy
dc.title	Laboratory assessment of rubber grid-reinforced ballast under impact testing
dc.type	Journal Article
utslib.citation.volume	13
utslib.for	0403 Geology
utslib.for	0905 Civil Engineering
utslib.for	0909 Geomatic Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	open_access	*
utslib.copyright.embargo	2024-06-01T00:00:00+1000Z
dc.date.updated	2023-12-18T09:54:40Z
pubs.issue	2
pubs.publication-status	Published
pubs.volume	13
utslib.citation.issue	2

Abstract:

This study presents the use of rubber grids (RGs) fabricated from end-of-life conveyor belts (i.e. discarded from the mining industry) to improve the performance of ballast tracks. The square apertures of these recycled rubber sheets were cast using a waterjet cutting process. A series of large-scale impact tests were performed on ballast specimens stabilised with three different grids of varied effective area ratios (KA.eff) to evaluate their effectiveness in mitigating the applied impact forces, in relation to both displacement and breakage of the ballast aggregates. Smart Ballast particles with motion-sensing capabilities were adopted to monitor the interaction between the grid and ballast assembly. The impact test results indicate that the inclusion of a RG decreases the deformation and breakage of ballast as well as reduces its vibrations. This study demonstrates that these recycled RGs with optimum effective area ratios can be more effective than conventional polymer geogrids, apart from the obvious environmental benefits.

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http://hdl.handle.net/10453/173864