Comparison of accelerated test methods for ASR reactivity testing

Field	Value	Language
dc.contributor.author	Boyd-Weetman, B
dc.contributor.author	Thomas, P https://orcid.org/0000-0001-6962-2121
dc.contributor.author	De Silva, P
dc.contributor.author	Sirivivatnanon, V
dc.date	2023-09-10
dc.date.accessioned	2023-10-24T07:21:10Z
dc.date.available	2023-10-24T07:21:10Z
dc.date.issued	2023-09-10
dc.identifier.citation	2023
dc.identifier.uri	http://hdl.handle.net/10453/172836
dc.description.abstract	The deleterious alkali silica reaction (ASR) affects the long term durability of concrete by reducing service life. Standardised accelerated test methods are used to rapidly asses reactivity. Rapidly accelerating the ASR reaction process may produce reactivity responses from aggregates that would not occur in field conditions. The environment in which the accelerated test is conducted is crucial in determining the degree to which the ASR reaction and associated deleterious expansion proceeds. In this study, a course reactive Australian aggregate concrete is exposed to standardised, and modified test methods to assess their effect on the observed ASR reaction. Australia has produced AS1141.60.2, a standardised concrete prism test at 38ºC for determining ASR reactivity of aggregates which is deployed in this study alongside a 60ºC concrete prism test and prism immersion test methods. This paper compares deleterious ASR expansion across a number of accelerated test methods and found good correlation between CPT and immersion based test methods.
dc.language	en
dc.relation	http://purl.org/au-research/grants/arc/IH150100006
dc.relation.ispartof	Conference of the Concrete Institute of Australia, Concrete 2023, Resilient and Sustainable Structures: Breaking Down Barriers
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Comparison of accelerated test methods for ASR reactivity testing
dc.type	Conference Proceeding
utslib.location.activity	Perth, WA
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
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	open_access	*
pubs.consider-herdc	false
dc.date.updated	2023-10-24T07:21:08Z
pubs.finish-date	2023-09-13
pubs.publication-status	Accepted
pubs.start-date	2023-09-10

Abstract:

The deleterious alkali silica reaction (ASR) affects the long term durability of concrete by reducing service life. Standardised accelerated test methods are used to rapidly asses reactivity. Rapidly accelerating the ASR reaction process may produce reactivity responses from aggregates that would not occur in field conditions. The environment in which the accelerated test is conducted is crucial in determining the degree to which the ASR reaction and associated deleterious expansion proceeds. In this study, a course reactive Australian aggregate concrete is exposed to standardised, and modified test methods to assess their effect on the observed ASR reaction. Australia has produced AS1141.60.2, a standardised concrete prism test at 38ºC for determining ASR reactivity of aggregates which is deployed in this study alongside a 60ºC concrete prism test and prism immersion test methods. This paper compares deleterious ASR expansion across a number of accelerated test methods and found good correlation between CPT and immersion based test methods.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/172836