Influence of steel-concrete interface and pre-existing oxides layer on passive reinforcing steel corrosion

Nasser, A; Castel, A; Merimi, I

Influence of steel-concrete interface and pre-existing oxides layer on passive reinforcing steel corrosion

Nasser, A Castel, A

Merimi, I

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Publication Type:: Journal Article
Citation:: ARPN Journal of Engineering and Applied Sciences, 2020, 15, (15), pp. 1622-1631
Issue Date:: 2020-08-01

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Field	Value	Language
dc.contributor.author	Nasser, A
dc.contributor.author	Castel, A https://orcid.org/0000-0003-1619-9643
dc.contributor.author	Merimi, I
dc.date.accessioned	2021-02-17T20:55:47Z
dc.date.available	2021-02-17T20:55:47Z
dc.date.issued	2020-08-01
dc.identifier.citation	ARPN Journal of Engineering and Applied Sciences, 2020, 15, (15), pp. 1622-1631
dc.identifier.issn	1819-6608
dc.identifier.uri	http://hdl.handle.net/10453/146185
dc.description.abstract	© 2006-2020 Asian Research Publishing Network (ARPN). This paper deals with the influence of the steel-concrete interface quality and preexisting oxides layer on reinforcement corrosion in passive state. In passive state, steel corrosion rate in concrete is considered null for conventional civil engineering structures due to the relatively short design service life time. On the contrary, for the nuclear waste facilities, due to a very long design life time, this low corrosion rate can become a risk. Previous studies, dealing with chloride induced steel corrosion in concrete, have clearly shown that the quality of the steel-concrete interface is a predominant factor for corrosion propagation. The purpose of this work is to study the influence of steel-concrete interface defaults and preexisting oxides layer on steel passivity and the consequences on the corrosion rate. Electrochemical methods and destructive surface analysis techniques were used to assess the corrosion rate of the embedded steel bars. Results confirm that the quality of the steel-concrete interface and the preexisting oxides layer affect the steel corrosion rate in passive state.
dc.language	en
dc.relation.ispartof	ARPN Journal of Engineering and Applied Sciences
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.subject	09 Engineering, 10 Technology
dc.title	Influence of steel-concrete interface and pre-existing oxides layer on passive reinforcing steel corrosion
dc.type	Journal Article
utslib.citation.volume	15
utslib.for	09 Engineering
utslib.for	10 Technology
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
utslib.copyright.status	closed_access	*
dc.date.updated	2021-02-17T20:55:40Z
pubs.issue	15
pubs.publication-status	Published
pubs.volume	15
utslib.citation.issue	15

Abstract:

© 2006-2020 Asian Research Publishing Network (ARPN). This paper deals with the influence of the steel-concrete interface quality and preexisting oxides layer on reinforcement corrosion in passive state. In passive state, steel corrosion rate in concrete is considered null for conventional civil engineering structures due to the relatively short design service life time. On the contrary, for the nuclear waste facilities, due to a very long design life time, this low corrosion rate can become a risk. Previous studies, dealing with chloride induced steel corrosion in concrete, have clearly shown that the quality of the steel-concrete interface is a predominant factor for corrosion propagation. The purpose of this work is to study the influence of steel-concrete interface defaults and preexisting oxides layer on steel passivity and the consequences on the corrosion rate. Electrochemical methods and destructive surface analysis techniques were used to assess the corrosion rate of the embedded steel bars. Results confirm that the quality of the steel-concrete interface and the preexisting oxides layer affect the steel corrosion rate in passive state.

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http://hdl.handle.net/10453/146185