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Article: Improved one-phase model of uniform corrosion for predicting the volume of rust

TitleImproved one-phase model of uniform corrosion for predicting the volume of rust
Authors
Keywordscement/cementitious materials
cracks & cracking
durability-related properties
Issue Date2020
PublisherThomas Telford (ICE Publishing). The Journal's web site is located at http://www.concrete-research.com
Citation
Magazine of Concrete Research, 2020, v. 72 n. 21, p. 1081-1088 How to Cite?
AbstractOne-phase models of rebar corrosion have been widely used by practising engineers to predict the volume of rust and the time to cracking of the concrete cover, but the models have only considered the deformation of concrete and not the deformation of steel or the rust layer. Neglecting the deformation of the rust layer may result in inaccurate predictions. This study therefore proposes an adjustment factor to take into account the effect of the deformation of the rust layer on predicting the volume of rust with a conventional one-phase model of uniform corrosion. Furthermore, the effects of the material properties of the rust layer and corrosion-induced expansive pressure on the adjustment factor are investigated. To avoid inaccurate predictions of the volume of rust, the proposed adjustment factor should be applied in the conventional one-phase model of corrosion when the Young's modulus of rust is less than 460 MPa.
Persistent Identifierhttp://hdl.handle.net/10722/284482
ISSN
2019 Impact Factor: 2.088
2015 SCImago Journal Rankings: 0.955

 

DC FieldValueLanguage
dc.contributor.authorZhang, Y-
dc.contributor.authorSu, RKL-
dc.date.accessioned2020-08-07T08:58:16Z-
dc.date.available2020-08-07T08:58:16Z-
dc.date.issued2020-
dc.identifier.citationMagazine of Concrete Research, 2020, v. 72 n. 21, p. 1081-1088-
dc.identifier.issn0024-9831-
dc.identifier.urihttp://hdl.handle.net/10722/284482-
dc.description.abstractOne-phase models of rebar corrosion have been widely used by practising engineers to predict the volume of rust and the time to cracking of the concrete cover, but the models have only considered the deformation of concrete and not the deformation of steel or the rust layer. Neglecting the deformation of the rust layer may result in inaccurate predictions. This study therefore proposes an adjustment factor to take into account the effect of the deformation of the rust layer on predicting the volume of rust with a conventional one-phase model of uniform corrosion. Furthermore, the effects of the material properties of the rust layer and corrosion-induced expansive pressure on the adjustment factor are investigated. To avoid inaccurate predictions of the volume of rust, the proposed adjustment factor should be applied in the conventional one-phase model of corrosion when the Young's modulus of rust is less than 460 MPa.-
dc.languageeng-
dc.publisherThomas Telford (ICE Publishing). The Journal's web site is located at http://www.concrete-research.com-
dc.relation.ispartofMagazine of Concrete Research-
dc.subjectcement/cementitious materials-
dc.subjectcracks & cracking-
dc.subjectdurability-related properties-
dc.titleImproved one-phase model of uniform corrosion for predicting the volume of rust-
dc.typeArticle-
dc.identifier.emailSu, RKL: klsu@hkucc.hku.hk-
dc.identifier.authoritySu, RKL=rp00072-
dc.description.naturepostprint-
dc.identifier.doi10.1680/jmacr.18.00363-
dc.identifier.scopuseid_2-s2.0-85094106012-
dc.identifier.hkuros311954-
dc.identifier.volume72-
dc.identifier.issue21-
dc.identifier.spage1081-
dc.identifier.epage1088-
dc.publisher.placeUnited Kingdom-

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