Detection of Top-Bar Effect in Reinforced Concrete Using Guided Ultrasonic Waves

Wang, Y; Mukherjee, A; Castel, A

Detection of Top-Bar Effect in Reinforced Concrete Using Guided Ultrasonic Waves

Wang, Y Mukherjee, A Castel, A

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Publisher:: American Society of Civil Engineers
Publication Type:: Journal Article
Citation:: Journal of Structural Engineering, 2021, 147, (4), pp. 1-10
Issue Date:: 2021-04-01

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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	2022-04-14T03:42:26Z
dc.date.available	2022-04-14T03:42:26Z
dc.date.issued	2021-04-01
dc.identifier.citation	Journal of Structural Engineering, 2021, 147, (4), pp. 1-10
dc.identifier.issn	0733-9445
dc.identifier.issn	1943-541X
dc.identifier.uri	http://hdl.handle.net/10453/156251
dc.description.abstract	An ultrasonic shear wave-based nondestructive method is proposed in this paper to detect steel-concrete interface debonding owing to the top-bar effect. A concrete wall was cast with horizontal reinforcements at different heights in order to create interfacial defects underneath the top bars. Lead zirconate titanate (PZT) patches were surface mounted at the ends of the bars to excite and record shear waves. The ultrasonic results showed that the amplitude of the signals increased with the height of the bars. The specimens were cut open after the experiments and the top-bar effect was clearly discerned. Its increase with the height of the bar was clearly observed. An increasing difference between the high-frequency component (HFC) and the excitation frequency of the signal was observed between the bottom bar with a good bond and the top bars. This feature can be utilized for nondestructively monitoring the top-bar effect.
dc.language	en
dc.publisher	American Society of Civil Engineers
dc.relation.ispartof	Journal of Structural Engineering
dc.relation.isbasedon	10.1061/(ASCE)ST.1943-541X.0002950
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering, 0912 Materials Engineering, 0913 Mechanical Engineering
dc.subject.classification	Civil Engineering
dc.title	Detection of Top-Bar Effect in Reinforced Concrete Using Guided Ultrasonic Waves
dc.type	Journal Article
utslib.citation.volume	147
utslib.for	0905 Civil Engineering
utslib.for	0912 Materials Engineering
utslib.for	0913 Mechanical 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	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2022-04-14T03:42:23Z
pubs.issue	4
pubs.publication-status	Published
pubs.volume	147
utslib.citation.issue	4

Abstract:

An ultrasonic shear wave-based nondestructive method is proposed in this paper to detect steel-concrete interface debonding owing to the top-bar effect. A concrete wall was cast with horizontal reinforcements at different heights in order to create interfacial defects underneath the top bars. Lead zirconate titanate (PZT) patches were surface mounted at the ends of the bars to excite and record shear waves. The ultrasonic results showed that the amplitude of the signals increased with the height of the bars. The specimens were cut open after the experiments and the top-bar effect was clearly discerned. Its increase with the height of the bar was clearly observed. An increasing difference between the high-frequency component (HFC) and the excitation frequency of the signal was observed between the bottom bar with a good bond and the top bars. This feature can be utilized for nondestructively monitoring the top-bar effect.

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http://hdl.handle.net/10453/156251