A Mixture of Waste Materials as a Construction Fill in Transportation Infrastructure

Tawk, M; Indraratna, B; Rujikiatkamjorn, C; Heitor, A

A Mixture of Waste Materials as a Construction Fill in Transportation Infrastructure

Tawk, M Indraratna, B

Rujikiatkamjorn, C

Heitor, A

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Publisher:: Springer International Publishing
Publication Type:: Chapter
Citation:: Advances in Transportation Geotechnics IV, 2022, 164, pp. 565-577
Issue Date:: 2022-01-01

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Field	Value	Language
dc.contributor.author	Tawk, M
dc.contributor.author	Indraratna, B https://orcid.org/0000-0002-9057-1514
dc.contributor.author	Rujikiatkamjorn, C https://orcid.org/0000-0001-8625-2839
dc.contributor.author	Heitor, A
dc.date.accessioned	2023-01-17T06:30:01Z
dc.date.available	2023-01-17T06:30:01Z
dc.date.issued	2022-01-01
dc.identifier.citation	Advances in Transportation Geotechnics IV, 2022, 164, pp. 565-577
dc.identifier.isbn	9783030772291
dc.identifier.uri	http://hdl.handle.net/10453/165075
dc.description.abstract	The reuse of waste materials in engineering projects is a sustainable concept that is being increasingly adopted in civil projects including the transportation infrastructure sector. A mixture of coal wash (CW), a waste produced by the coal mining industry, and rubber crumbs (RC), produced by shredding waste rubber tyres, is a possible alternative to natural quarried rock aggregates that are traditionally used in sublayers of transportation corridors. These materials have different properties than traditional aggregates and their geotechnical behaviour must be investigated before they can be confidently used in transportation infrastructure projects. This study particularly addresses the compaction characteristics of four CWRC mixtures (i.e. 0, 5, 10 and 15% rubber content) with a focus on the energy absorbing nature of rubber. The compaction energy must be increased to compensate for the energy absorbed by rubber and produce a compact packing of particles whilst keeping the breakage levels to a minimum. The strength and deformation properties of the mixture are also addressed through static triaxial tests under three confining pressures to simulate field conditions (i.e. 25, 50 and 75 kPa). The preliminary results showed that the mixture has sufficient strength for transportation sublayers that are not the main load bearing layers such as the subbase layer in roads and the capping/subballast layer in railways. Despite the compressibility of rubber which induces higher settlements, for the loads applied in practice at the level of a subbase or a capping layer, the expected settlements are within the allowable limits.
dc.language	en
dc.publisher	Springer International Publishing
dc.relation	http://purl.org/au-research/grants/arc/LP160100280
dc.relation.ispartof	Advances in Transportation Geotechnics IV
dc.relation.isbasedon	10.1007/978-3-030-77230-7_43
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	A Mixture of Waste Materials as a Construction Fill in Transportation Infrastructure
dc.type	Chapter
utslib.citation.volume	164
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	closed_access	*
dc.date.updated	2023-01-17T06:30:00Z
pubs.publication-status	Published
pubs.volume	164

Abstract:

The reuse of waste materials in engineering projects is a sustainable concept that is being increasingly adopted in civil projects including the transportation infrastructure sector. A mixture of coal wash (CW), a waste produced by the coal mining industry, and rubber crumbs (RC), produced by shredding waste rubber tyres, is a possible alternative to natural quarried rock aggregates that are traditionally used in sublayers of transportation corridors. These materials have different properties than traditional aggregates and their geotechnical behaviour must be investigated before they can be confidently used in transportation infrastructure projects. This study particularly addresses the compaction characteristics of four CWRC mixtures (i.e. 0, 5, 10 and 15% rubber content) with a focus on the energy absorbing nature of rubber. The compaction energy must be increased to compensate for the energy absorbed by rubber and produce a compact packing of particles whilst keeping the breakage levels to a minimum. The strength and deformation properties of the mixture are also addressed through static triaxial tests under three confining pressures to simulate field conditions (i.e. 25, 50 and 75 kPa). The preliminary results showed that the mixture has sufficient strength for transportation sublayers that are not the main load bearing layers such as the subbase layer in roads and the capping/subballast layer in railways. Despite the compressibility of rubber which induces higher settlements, for the loads applied in practice at the level of a subbase or a capping layer, the expected settlements are within the allowable limits.

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http://hdl.handle.net/10453/165075