Closure to "Effect of rubber crumbs on the cyclic behavior of steel furnace slag and coal wash mixtures" by Yujie Qi, Buddhima Indraratna, Ana Heitor, and Jayan S. Vinod

Qi, Y; Indraratna, B; Heitor, A; Vinod, JS

Closure to "Effect of rubber crumbs on the cyclic behavior of steel furnace slag and coal wash mixtures" by Yujie Qi, Buddhima Indraratna, Ana Heitor, and Jayan S. Vinod

Qi, Y

Indraratna, B

Heitor, A Vinod, JS

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Publisher:: ASCE-AMER SOC CIVIL ENGINEERS
Publication Type:: Journal Article
Citation:: Journal of Geotechnical and Geoenvironmental Engineering, 2019, 145, (1)
Issue Date:: 2019-01-01

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Field	Value	Language
dc.contributor.author	Qi, Y https://orcid.org/0000-0002-3486-2130
dc.contributor.author	Indraratna, B https://orcid.org/0000-0002-9057-1514
dc.contributor.author	Heitor, A
dc.contributor.author	Vinod, JS
dc.date.accessioned	2022-02-15T23:43:50Z
dc.date.available	2022-02-15T23:43:50Z
dc.date.issued	2019-01-01
dc.identifier.citation	Journal of Geotechnical and Geoenvironmental Engineering, 2019, 145, (1)
dc.identifier.issn	1090-0241
dc.identifier.issn	1943-5606
dc.identifier.uri	http://hdl.handle.net/10453/154555
dc.description.abstract	The practical application of waste materials such as steel furnace slag (SFS) and coal wash (CW) is becoming more prevalent in many geotechnical projects. While adding rubber crumbs (RCs) from recycled tires into mixtures of SFS and CW not only solves the problem of large stockpiles of waste tires, it also can provide an energy-absorbing medium that will reduce vibration and prevent track degradation. Thus, the engineering insight into the effect that rubber crumbs have on the dynamic behavior of SFS + CW + RC mixtures is in urgent demand. In this study the influence that RC contents and confining pressures have on the deformation, resilient modulus, damping ratio, and shear modulus was investigated by cyclic triaxial tests. Test results reveal that with the inclusion of RC, the axial strain, volumetric strain, damping ratio, and energy-absorbing capacity of the SFS + CW + RC mixture increase, while its resilient modulus and shear modulus decrease. Based on these properties, an amount of 10% RC is recommended as an optimal blended mix to be used as railway subballast. A three-dimensional (3D) empirical model of the relationship between the maximum axial strain, volumetric strain, and resilient modulus with RC contents and the effective confining pressure was developed, and the energy-absorbing capacity of these waste mixtures has also been analyzed for practical purposes based on their comprehensive parameters.
dc.language	English
dc.publisher	ASCE-AMER SOC CIVIL ENGINEERS
dc.relation.ispartof	Journal of Geotechnical and Geoenvironmental Engineering
dc.relation.isbasedon	10.1061/(ASCE)GT.1943-5606.0001827
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0905 Civil Engineering, 0907 Environmental Engineering
dc.subject.classification	Geological & Geomatics Engineering
dc.title	Closure to "Effect of rubber crumbs on the cyclic behavior of steel furnace slag and coal wash mixtures" by Yujie Qi, Buddhima Indraratna, Ana Heitor, and Jayan S. Vinod
dc.type	Journal Article
utslib.citation.volume	145
utslib.for	0905 Civil Engineering
utslib.for	0907 Environmental 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	*
dc.date.updated	2022-02-15T23:43:48Z
pubs.issue	1
pubs.publication-status	Published
pubs.volume	145
utslib.citation.issue	1

Abstract:

The practical application of waste materials such as steel furnace slag (SFS) and coal wash (CW) is becoming more prevalent in many geotechnical projects. While adding rubber crumbs (RCs) from recycled tires into mixtures of SFS and CW not only solves the problem of large stockpiles of waste tires, it also can provide an energy-absorbing medium that will reduce vibration and prevent track degradation. Thus, the engineering insight into the effect that rubber crumbs have on the dynamic behavior of SFS + CW + RC mixtures is in urgent demand. In this study the influence that RC contents and confining pressures have on the deformation, resilient modulus, damping ratio, and shear modulus was investigated by cyclic triaxial tests. Test results reveal that with the inclusion of RC, the axial strain, volumetric strain, damping ratio, and energy-absorbing capacity of the SFS + CW + RC mixture increase, while its resilient modulus and shear modulus decrease. Based on these properties, an amount of 10% RC is recommended as an optimal blended mix to be used as railway subballast. A three-dimensional (3D) empirical model of the relationship between the maximum axial strain, volumetric strain, and resilient modulus with RC contents and the effective confining pressure was developed, and the energy-absorbing capacity of these waste mixtures has also been analyzed for practical purposes based on their comprehensive parameters.

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http://hdl.handle.net/10453/154555