Ultrasonic guided waves for monitoring incipient corrosion in reinforced concrete with top-bar defect

Wang, Y; Mukherjee, A; Castel, A

Ultrasonic guided waves for monitoring incipient corrosion in reinforced concrete with top-bar defect

Wang, Y Mukherjee, A Castel, A

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Publisher:: ELSEVIER SCI LTD
Publication Type:: Journal Article
Citation:: Cement and Concrete Composites, 2023, 141
Issue Date:: 2023-08-01

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Field	Value	Language
dc.contributor.author	Wang, Y
dc.contributor.author	Mukherjee, A
dc.contributor.author	Castel, A https://orcid.org/0000-0003-1619-9643
dc.date.accessioned	2024-04-10T05:50:02Z
dc.date.available	2024-04-10T05:50:02Z
dc.date.issued	2023-08-01
dc.identifier.citation	Cement and Concrete Composites, 2023, 141
dc.identifier.issn	0958-9465
dc.identifier.issn	1873-393X
dc.identifier.uri	http://hdl.handle.net/10453/177649
dc.description.abstract	Top-bar defects in reinforced concrete are voids that are observed below the reinforcing bars that are at an elevation of more than 300 mm. The authors have demonstrated a new ultrasonic guided wave technique to non-destructively detect top-bar defect (Wang, Mukherjee et al., 2021). It has been reported that bars with top-bar defect corrode is faster than other bars. The corrosion also manifests in a different manner in these bars. This paper proposes a guided ultrasonic wave-based non-destructive method for monitoring corrosion in reinforced concrete with top-bar defect. Concrete wall samples with bars of various extents of top-bar defect were subjected to accelerated corrosion. Simultaneously, the bars have been monitored with guided ultrasonics. The investigation revealed that top-bar defect has a significant influence on the corrosion process. The destructive tests performed at the end of corrosion exposure revealed that the top-bar specimens had a significant loss of strength than the bars with a good bond. The proposed non-destructive has been calibrated to assess the residual capacities of corroded bars in presence of top-bar defect.
dc.language	English
dc.publisher	ELSEVIER SCI LTD
dc.relation	http://purl.org/au-research/grants/arc/DP160104731
dc.relation.ispartof	Cement and Concrete Composites
dc.relation.isbasedon	10.1016/j.cemconcomp.2023.105116
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0904 Chemical Engineering, 0905 Civil Engineering, 1202 Building
dc.subject.classification	Building & Construction
dc.subject.classification	3302 Building
dc.subject.classification	4005 Civil engineering
dc.subject.classification	4016 Materials engineering
dc.title	Ultrasonic guided waves for monitoring incipient corrosion in reinforced concrete with top-bar defect
dc.type	Journal Article
utslib.citation.volume	141
utslib.for	0904 Chemical Engineering
utslib.for	0905 Civil Engineering
utslib.for	1202 Building
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	2024-04-10T05:50:00Z
pubs.publication-status	Published
pubs.volume	141

Abstract:

Top-bar defects in reinforced concrete are voids that are observed below the reinforcing bars that are at an elevation of more than 300 mm. The authors have demonstrated a new ultrasonic guided wave technique to non-destructively detect top-bar defect (Wang, Mukherjee et al., 2021). It has been reported that bars with top-bar defect corrode is faster than other bars. The corrosion also manifests in a different manner in these bars. This paper proposes a guided ultrasonic wave-based non-destructive method for monitoring corrosion in reinforced concrete with top-bar defect. Concrete wall samples with bars of various extents of top-bar defect were subjected to accelerated corrosion. Simultaneously, the bars have been monitored with guided ultrasonics. The investigation revealed that top-bar defect has a significant influence on the corrosion process. The destructive tests performed at the end of corrosion exposure revealed that the top-bar specimens had a significant loss of strength than the bars with a good bond. The proposed non-destructive has been calibrated to assess the residual capacities of corroded bars in presence of top-bar defect.

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http://hdl.handle.net/10453/177649