Modelling steel corrosion under concrete non-uniformity and structural defects

Yu, Y; Gao, W; Castel, A; Liu, A; Feng, Y; Chen, X; Mukherjee, A

Modelling steel corrosion under concrete non-uniformity and structural defects

Yu, Y Gao, W Castel, A

Liu, A Feng, Y Chen, X Mukherjee, A

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: Cement and Concrete Research, 2020, 135, pp. 106109-106109
Issue Date:: 2020-09-01

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Field	Value	Language
dc.contributor.author	Yu, Y
dc.contributor.author	Gao, W
dc.contributor.author	Castel, A https://orcid.org/0000-0003-1619-9643
dc.contributor.author	Liu, A
dc.contributor.author	Feng, Y
dc.contributor.author	Chen, X
dc.contributor.author	Mukherjee, A
dc.date.accessioned	2021-03-07T07:43:04Z
dc.date.available	2021-03-07T07:43:04Z
dc.date.issued	2020-09-01
dc.identifier.citation	Cement and Concrete Research, 2020, 135, pp. 106109-106109
dc.identifier.issn	0008-8846
dc.identifier.uri	http://hdl.handle.net/10453/146858
dc.description.abstract	© 2020 Elsevier Ltd Reinforcement corrosion is one of the most frequent durability problems among ageing concrete structures. Macrocell corrosion is greatly affected by both concrete properties and the steel-concrete interfacial conditions. Inaccurate interpretations of these characteristics lead to unrealistic estimations of early corrosion propagation. Carbonation-induced macrocell corrosion, including the impact of structural defects formed by concrete casting, is addressed in this study. The non-uniform corrosion cell created due to the progressive carbonation of concrete is numerically obtained by combining chemophysical modelling and multiscale homogenisation. The macrocell corrosion under material non-uniformity is then studied by electrochemical modelling based on finite element method. The developed method is first validated against reported experiments to further initiate an in-depth discussion on the significance of material non-uniformity on corrosion modelling either with or without structural defects. The present study is particularly important for advancing the service life monitoring and assessment of ageing concrete structures.
dc.language	en
dc.publisher	Elsevier BV
dc.relation	http://purl.org/au-research/grants/arc/IH150100006
dc.relation	http://purl.org/au-research/grants/arc/DP160104731
dc.relation.ispartof	Cement and Concrete Research
dc.relation.isbasedon	10.1016/j.cemconres.2020.106109
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0904 Chemical Engineering, 0905 Civil Engineering, 1202 Building
dc.subject.classification	Building & Construction
dc.title	Modelling steel corrosion under concrete non-uniformity and structural defects
dc.type	Journal Article
utslib.citation.volume	135
utslib.for	0904 Chemical Engineering
utslib.for	0905 Civil Engineering
utslib.for	1202 Building
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	2021-03-07T07:43:01Z
pubs.publication-status	Published
pubs.volume	135

Abstract:

© 2020 Elsevier Ltd Reinforcement corrosion is one of the most frequent durability problems among ageing concrete structures. Macrocell corrosion is greatly affected by both concrete properties and the steel-concrete interfacial conditions. Inaccurate interpretations of these characteristics lead to unrealistic estimations of early corrosion propagation. Carbonation-induced macrocell corrosion, including the impact of structural defects formed by concrete casting, is addressed in this study. The non-uniform corrosion cell created due to the progressive carbonation of concrete is numerically obtained by combining chemophysical modelling and multiscale homogenisation. The macrocell corrosion under material non-uniformity is then studied by electrochemical modelling based on finite element method. The developed method is first validated against reported experiments to further initiate an in-depth discussion on the significance of material non-uniformity on corrosion modelling either with or without structural defects. The present study is particularly important for advancing the service life monitoring and assessment of ageing concrete structures.

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http://hdl.handle.net/10453/146858