Shakedown response of recycled rubber-granular waste mixtures under cyclic loading

Malisetty, RS; Indraratna, B; Qi, Y; Rujikiatkamjorn, C

Shakedown response of recycled rubber-granular waste mixtures under cyclic loading

Malisetty, RS Indraratna, B

Qi, Y

Rujikiatkamjorn, C

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Publisher:: ICE PUBLISHING
Publication Type:: Journal Article
Citation:: Geotechnique, 2022
Issue Date:: 2022-01-01

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Field	Value	Language
dc.contributor.author	Malisetty, RS
dc.contributor.author	Indraratna, B https://orcid.org/0000-0002-9057-1514
dc.contributor.author	Qi, Y https://orcid.org/0000-0002-3486-2130
dc.contributor.author	Rujikiatkamjorn, C https://orcid.org/0000-0001-8625-2839
dc.date.accessioned	2023-01-17T06:18:31Z
dc.date.available	2023-01-17T06:18:31Z
dc.date.issued	2022-01-01
dc.identifier.citation	Geotechnique, 2022
dc.identifier.issn	0016-8505
dc.identifier.issn	1751-7656
dc.identifier.uri	http://hdl.handle.net/10453/165070
dc.description.abstract	Understanding and quantifying the long-term deformation behaviour of granular materials under repeated loads is imperative for ensuring the longevity of railway tracks. One of the most relevant characteristics of granular materials under repeated cycles of loading and unloading is their ability to achieve a relatively stable state (shakedown) after being subjected to initial compression. The shakedown response of blended rubber-granular waste mixtures under triaxial test conditions has been studied by past studies highlighting the influence of the rubber content, confining stress, and cyclic loading amplitude. However, a clear methodology for estimating shakedown yield limits of these granular mixtures has not been discussed in detail. The current study highlights the influence of peak shear strength of these mixtures under static loading on their shakedown response in cyclic loading conditions. It is observed that the variation of static shear strength with rubber contents and confining stresses is found to affect the shakedown response. A unified method of estimating the shakedown limit is proposed by analysing permanent axial strains with normalised cyclic stress ratio at different loading cycles. The proposed method is validated through two independent sets of drained cyclic triaxial test data on coal wash-rubber crumb mixtures and rail ballast.
dc.language	English
dc.publisher	ICE PUBLISHING
dc.relation.ispartof	Geotechnique
dc.relation.isbasedon	10.1680/jgeot.21.00040
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0905 Civil Engineering, 0907 Environmental Engineering, 0914 Resources Engineering and Extractive Metallurgy
dc.subject.classification	Geological & Geomatics Engineering
dc.title	Shakedown response of recycled rubber-granular waste mixtures under cyclic loading
dc.type	Journal Article
utslib.for	0905 Civil Engineering
utslib.for	0907 Environmental Engineering
utslib.for	0914 Resources Engineering and Extractive Metallurgy
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	2023-01-17T06:18:29Z
pubs.publication-status	Published

Abstract:

Understanding and quantifying the long-term deformation behaviour of granular materials under repeated loads is imperative for ensuring the longevity of railway tracks. One of the most relevant characteristics of granular materials under repeated cycles of loading and unloading is their ability to achieve a relatively stable state (shakedown) after being subjected to initial compression. The shakedown response of blended rubber-granular waste mixtures under triaxial test conditions has been studied by past studies highlighting the influence of the rubber content, confining stress, and cyclic loading amplitude. However, a clear methodology for estimating shakedown yield limits of these granular mixtures has not been discussed in detail. The current study highlights the influence of peak shear strength of these mixtures under static loading on their shakedown response in cyclic loading conditions. It is observed that the variation of static shear strength with rubber contents and confining stresses is found to affect the shakedown response. A unified method of estimating the shakedown limit is proposed by analysing permanent axial strains with normalised cyclic stress ratio at different loading cycles. The proposed method is validated through two independent sets of drained cyclic triaxial test data on coal wash-rubber crumb mixtures and rail ballast.

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http://hdl.handle.net/10453/165070