Use of Synthetic Energy Absorbing Layer (SEAL) in Rail Substructure to Minimize Track Degradation

Indraratna, B; Qi, Y; Ngo, T; Rujikiatkamjorn, C

Use of Synthetic Energy Absorbing Layer (SEAL) in Rail Substructure to Minimize Track Degradation

Indraratna, B

Qi, Y

Ngo, T Rujikiatkamjorn, C

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Publisher:: American Society of Civil Engineers (ASCE)
Publication Type:: Conference Proceeding
Citation:: Geotechnical Special Publication, 2023, 2023-March, (GSP 343), pp. 343-352
Issue Date:: 2023-01-01

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Field	Value	Language
dc.contributor.author	Indraratna, B https://orcid.org/0000-0002-2346-8250
dc.contributor.author	Qi, Y https://orcid.org/0000-0002-3486-2130
dc.contributor.author	Ngo, T
dc.contributor.author	Rujikiatkamjorn, C https://orcid.org/0000-0001-8625-2839
dc.date.accessioned	2023-05-05T04:55:44Z
dc.date.available	2023-05-05T04:55:44Z
dc.date.issued	2023-01-01
dc.identifier.citation	Geotechnical Special Publication, 2023, 2023-March, (GSP 343), pp. 343-352
dc.identifier.issn	0895-0563
dc.identifier.uri	http://hdl.handle.net/10453/170226
dc.description.abstract	This paper presents novel solutions for increasing the stability and resiliency of track structures by developing a synthetic energy-absorbing layer (SEAL) using recycled rubber products based on large-scale laboratory tests (i.e., drop-hammer impact tests and cubic triaxial tests). This includes (1) installing recycled rubber mats under ballast, and (2) using SEAL composed of a mixture of rubber crumbs, steel furnace slag, and coal wash with changing amounts of rubber: 0%, 10%, 20%, 30%, and 40% (by weight) to replace traditional rockfill as subballast. The test results confirm that the inclusion of a recycled rubber mat underneath the ballast layer actively reduces ballast deformation and the propagation of impact loading within the depth of the substructure. Also, the SEAL mixture with 10% rubber reduces the track lateral dilation, reduces ballast breakage and load distribution, and also maintains an acceptable settlement.
dc.language	en
dc.publisher	American Society of Civil Engineers (ASCE)
dc.relation	http://purl.org/au-research/grants/arc/DP220102862
dc.relation.ispartof	Geotechnical Special Publication
dc.relation.ispartof	Geo-Congress 2023
dc.relation.isbasedon	10.1061/9780784484708.032
dc.rights	info:eu-repo/semantics/openAccess
dc.subject.classification	Geological & Geomatics Engineering
dc.title	Use of Synthetic Energy Absorbing Layer (SEAL) in Rail Substructure to Minimize Track Degradation
dc.type	Conference Proceeding
utslib.citation.volume	2023-March
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	*
dc.date.updated	2023-05-05T04:55:43Z
pubs.issue	GSP 343
pubs.publication-status	Published
pubs.volume	2023-March
utslib.citation.issue	GSP 343

Abstract:

This paper presents novel solutions for increasing the stability and resiliency of track structures by developing a synthetic energy-absorbing layer (SEAL) using recycled rubber products based on large-scale laboratory tests (i.e., drop-hammer impact tests and cubic triaxial tests). This includes (1) installing recycled rubber mats under ballast, and (2) using SEAL composed of a mixture of rubber crumbs, steel furnace slag, and coal wash with changing amounts of rubber: 0%, 10%, 20%, 30%, and 40% (by weight) to replace traditional rockfill as subballast. The test results confirm that the inclusion of a recycled rubber mat underneath the ballast layer actively reduces ballast deformation and the propagation of impact loading within the depth of the substructure. Also, the SEAL mixture with 10% rubber reduces the track lateral dilation, reduces ballast breakage and load distribution, and also maintains an acceptable settlement.

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http://hdl.handle.net/10453/170226