Modeling steel concrete bond strength reduction due to corrosion

Castel, A; Khan, I; François, R; Gilbert, RI

Modeling steel concrete bond strength reduction due to corrosion

Castel, A

Khan, I François, R Gilbert, RI

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Publisher:: AMER CONCRETE INST
Publication Type:: Journal Article
Citation:: ACI Structural Journal, 2016, 113, (5), pp. 973-982
Issue Date:: 2016-09-01

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Field	Value	Language
dc.contributor.author	Castel, A https://orcid.org/0000-0003-1619-9643
dc.contributor.author	Khan, I
dc.contributor.author	François, R
dc.contributor.author	Gilbert, RI
dc.date.accessioned	2022-02-26T03:10:37Z
dc.date.available	2022-02-26T03:10:37Z
dc.date.issued	2016-09-01
dc.identifier.citation	ACI Structural Journal, 2016, 113, (5), pp. 973-982
dc.identifier.issn	0889-3241
dc.identifier.issn	1944-7361
dc.identifier.uri	http://hdl.handle.net/10453/154872
dc.description.abstract	Reinforcement corrosion in reinforced concrete (RC) structures induces concrete cracking and leads to a reduction in both steel cross section and steel-concrete bond strength. In this paper, a new model is proposed based on a scalar damage parameter Dc that depends on the loss of cross-sectional area of steel due to corrosion. The model predictions are plotted against experimental data from the literature based on both accelerated and natural corrosion processes and compared to other existing empirical models. The proposed new model significantly improves the prediction of the bond strength of corroding steel bars and is valid for all diameters ranging between 10 and 20 mm (0.39 and 0.79 in.). Moreover, two additional parameters have been implemented in the model, allowing for the consideration of natural (localized) corrosion and the presence of stirrups. A stirrups confinement coefficient st and a pit penetration depth coefficient α have been successfully calibrated using experimental results from the literature.
dc.language	English
dc.publisher	AMER CONCRETE INST
dc.relation.ispartof	ACI Structural Journal
dc.relation.isbasedon	10.14359/51688925
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering, 1202 Building
dc.subject.classification	Civil Engineering
dc.title	Modeling steel concrete bond strength reduction due to corrosion
dc.type	Journal Article
utslib.citation.volume	113
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	2022-02-26T03:10:34Z
pubs.issue	5
pubs.publication-status	Published
pubs.volume	113
utslib.citation.issue	5

Abstract:

Reinforcement corrosion in reinforced concrete (RC) structures induces concrete cracking and leads to a reduction in both steel cross section and steel-concrete bond strength. In this paper, a new model is proposed based on a scalar damage parameter Dc that depends on the loss of cross-sectional area of steel due to corrosion. The model predictions are plotted against experimental data from the literature based on both accelerated and natural corrosion processes and compared to other existing empirical models. The proposed new model significantly improves the prediction of the bond strength of corroding steel bars and is valid for all diameters ranging between 10 and 20 mm (0.39 and 0.79 in.). Moreover, two additional parameters have been implemented in the model, allowing for the consideration of natural (localized) corrosion and the presence of stirrups. A stirrups confinement coefficient st and a pit penetration depth coefficient α have been successfully calibrated using experimental results from the literature.

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http://hdl.handle.net/10453/154872