Study on the failure mechanism of geopolymeric recycled concrete using digital image correlation method

Tang, Z; Li, W; Peng, Q; Tam, VWY; Wang, K

Study on the failure mechanism of geopolymeric recycled concrete using digital image correlation method

Tang, Z Li, W

Peng, Q Tam, VWY Wang, K

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Publisher:: TAYLOR & FRANCIS LTD
Publication Type:: Journal Article
Citation:: Journal of Sustainable Cement-Based Materials, 2022, 11, (2), pp. 161-180
Issue Date:: 2022-01-01

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Field	Value	Language
dc.contributor.author	Tang, Z
dc.contributor.author	Li, W https://orcid.org/0000-0002-4651-1215
dc.contributor.author	Peng, Q
dc.contributor.author	Tam, VWY
dc.contributor.author	Wang, K
dc.date.accessioned	2022-05-02T03:18:07Z
dc.date.available	2022-05-02T03:18:07Z
dc.date.issued	2022-01-01
dc.identifier.citation	Journal of Sustainable Cement-Based Materials, 2022, 11, (2), pp. 161-180
dc.identifier.issn	2165-0373
dc.identifier.issn	2165-0381
dc.identifier.uri	http://hdl.handle.net/10453/156908
dc.description.abstract	In this study, an experimental investigation was conducted to understand the failure mechanism of geopolymeric recycled aggregate concrete (GRAC) under compression. GRAC specimens with different recycled aggregate (RA) replacement ratios were prepared and tested. A digital image correlation (DIC) system was used to monitor the displacement field and strain distribution over the surface of the specimen. The results revealed that RA replacement adversely affected the mechanical properties of geopolymeric concrete, including compressive strength, elastic modulus, and splitting tensile strength. For all the specimens, cracks mainly initiated near the interfacial transition zones, and usually nucleated around natural aggregate (NA) rather than RA. As observed from the final crack patterns, it was more frequent for the RA that cracks passed through the aggregate particles, in comparison with the NA. The location of strain concentration region detected by the DIC method was closely consistent with that of the formed macro cracks.
dc.language	English
dc.publisher	TAYLOR & FRANCIS LTD
dc.relation	http://purl.org/au-research/grants/arc/DE150101751
dc.relation.ispartof	Journal of Sustainable Cement-Based Materials
dc.relation.isbasedon	10.1080/21650373.2021.1897706
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering
dc.title	Study on the failure mechanism of geopolymeric recycled concrete using digital image correlation method
dc.type	Journal Article
utslib.citation.volume	11
utslib.for	0905 Civil 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
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	closed_access	*
dc.date.updated	2022-05-02T03:18:04Z
pubs.issue	2
pubs.publication-status	Published
pubs.volume	11
utslib.citation.issue	2

Abstract:

In this study, an experimental investigation was conducted to understand the failure mechanism of geopolymeric recycled aggregate concrete (GRAC) under compression. GRAC specimens with different recycled aggregate (RA) replacement ratios were prepared and tested. A digital image correlation (DIC) system was used to monitor the displacement field and strain distribution over the surface of the specimen. The results revealed that RA replacement adversely affected the mechanical properties of geopolymeric concrete, including compressive strength, elastic modulus, and splitting tensile strength. For all the specimens, cracks mainly initiated near the interfacial transition zones, and usually nucleated around natural aggregate (NA) rather than RA. As observed from the final crack patterns, it was more frequent for the RA that cracks passed through the aggregate particles, in comparison with the NA. The location of strain concentration region detected by the DIC method was closely consistent with that of the formed macro cracks.

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http://hdl.handle.net/10453/156908