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Article: A novel elastic-body-rotation model for concrete cover spalling caused by non-uniform corrosion of reinforcement

TitleA novel elastic-body-rotation model for concrete cover spalling caused by non-uniform corrosion of reinforcement
Authors
KeywordsConcrete cover
Non-uniform corrosion
Cover spalling
Analytical model
Issue Date2019
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/conbuildmat
Citation
Construction and Building Materials, 2019, v. 213, p. 549-560 How to Cite?
AbstractA novel elastic-body-rotation model is proposed to analyze the mechanism and the process of cover cracking and spalling caused by the non-uniform corrosion of widely spaced reinforcements. The width of the cover surface cracks, bulging of the concrete surface and maximum thickness of the corroded steel can be predicted by using the proposed model. The predicted bulging of the concrete cover has been validated by the experimental and numerical results. Using the validated model, the effects of the diagonal crack angle, tensile strength of concrete and cover thickness on the bulging of the cover surface and the thickness of the corroded steel for initiating and widening cracks are investigated with a parametric study. It is found that the diagonal cracking angle has a major influence on the cover surface crack width. In addition, the degree of corrosion in rebars and the width of internal diagonal cracks can be evaluated by simply measuring the width of surface cracks or the bulging of cover surface.
Persistent Identifierhttp://hdl.handle.net/10722/272148
ISSN
2019 Impact Factor: 4.419
2015 SCImago Journal Rankings: 1.606
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorSu, RKL-
dc.contributor.authorZhang, Y-
dc.date.accessioned2019-07-20T10:36:36Z-
dc.date.available2019-07-20T10:36:36Z-
dc.date.issued2019-
dc.identifier.citationConstruction and Building Materials, 2019, v. 213, p. 549-560-
dc.identifier.issn0950-0618-
dc.identifier.urihttp://hdl.handle.net/10722/272148-
dc.description.abstractA novel elastic-body-rotation model is proposed to analyze the mechanism and the process of cover cracking and spalling caused by the non-uniform corrosion of widely spaced reinforcements. The width of the cover surface cracks, bulging of the concrete surface and maximum thickness of the corroded steel can be predicted by using the proposed model. The predicted bulging of the concrete cover has been validated by the experimental and numerical results. Using the validated model, the effects of the diagonal crack angle, tensile strength of concrete and cover thickness on the bulging of the cover surface and the thickness of the corroded steel for initiating and widening cracks are investigated with a parametric study. It is found that the diagonal cracking angle has a major influence on the cover surface crack width. In addition, the degree of corrosion in rebars and the width of internal diagonal cracks can be evaluated by simply measuring the width of surface cracks or the bulging of cover surface.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/conbuildmat-
dc.relation.ispartofConstruction and Building Materials-
dc.subjectConcrete cover-
dc.subjectNon-uniform corrosion-
dc.subjectCover spalling-
dc.subjectAnalytical model-
dc.titleA novel elastic-body-rotation model for concrete cover spalling caused by non-uniform corrosion of reinforcement-
dc.typeArticle-
dc.identifier.emailSu, RKL: klsu@hkucc.hku.hk-
dc.identifier.authoritySu, RKL=rp00072-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.conbuildmat.2019.04.096-
dc.identifier.scopuseid_2-s2.0-85064222822-
dc.identifier.hkuros299116-
dc.identifier.volume213-
dc.identifier.spage549-
dc.identifier.epage560-
dc.identifier.isiWOS:000471084500049-
dc.publisher.placeNetherlands-

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