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Article: A new bond model for reinforcing bars in steel fibre reinforced concrete

TitleA new bond model for reinforcing bars in steel fibre reinforced concrete
Authors
KeywordsBond model
Bond stiffness
Bond strength
Bond stress-slip model
Fibre reinforced concrete (FRC)
Issue Date2019
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/cemconcomp
Citation
Cement and Concrete Composites, 2019, v. 104, p. article no. 103405 How to Cite?
AbstractThe addition of fibres to concrete would significantly improve the bond between the concrete and the rebars embedded therein. However, it remains a difficult task to model the rebar bond stress-slip relation of fibre reinforced concrete (FRC). In the present research, the effects of adding steel fibres on the rebar bond properties have been studied by conducting pull out tests of rebars embedded in steel FRC. Then, a new rebar bond model for steel FRC is developed by modifying the existing one for plain concrete in Model Code 2010. Besides incorporating the effects of steel fibres for extended application to steel FRC, a finite initial bond stiffness (the initial bond stiffness in Model Code 2010 is infinite) is adopted in the model for more realistic bond-slip analysis. The coefficients in the model are determined by analysing the experimental results from present study and the available data published in literature. Interestingly, it is found that the concrete strength and steel fibres have synergistic effect on the bond performance of steel FRC.
Persistent Identifierhttp://hdl.handle.net/10722/290877
ISSN
2020 Impact Factor: 7.586
2020 SCImago Journal Rankings: 2.896
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChu, SH-
dc.contributor.authorKwan, AKH-
dc.date.accessioned2020-11-02T05:48:23Z-
dc.date.available2020-11-02T05:48:23Z-
dc.date.issued2019-
dc.identifier.citationCement and Concrete Composites, 2019, v. 104, p. article no. 103405-
dc.identifier.issn0958-9465-
dc.identifier.urihttp://hdl.handle.net/10722/290877-
dc.description.abstractThe addition of fibres to concrete would significantly improve the bond between the concrete and the rebars embedded therein. However, it remains a difficult task to model the rebar bond stress-slip relation of fibre reinforced concrete (FRC). In the present research, the effects of adding steel fibres on the rebar bond properties have been studied by conducting pull out tests of rebars embedded in steel FRC. Then, a new rebar bond model for steel FRC is developed by modifying the existing one for plain concrete in Model Code 2010. Besides incorporating the effects of steel fibres for extended application to steel FRC, a finite initial bond stiffness (the initial bond stiffness in Model Code 2010 is infinite) is adopted in the model for more realistic bond-slip analysis. The coefficients in the model are determined by analysing the experimental results from present study and the available data published in literature. Interestingly, it is found that the concrete strength and steel fibres have synergistic effect on the bond performance of steel FRC.-
dc.languageeng-
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/cemconcomp-
dc.relation.ispartofCement and Concrete Composites-
dc.subjectBond model-
dc.subjectBond stiffness-
dc.subjectBond strength-
dc.subjectBond stress-slip model-
dc.subjectFibre reinforced concrete (FRC)-
dc.titleA new bond model for reinforcing bars in steel fibre reinforced concrete-
dc.typeArticle-
dc.identifier.emailChu, SH: aschu@HKUCC-COM.hku.hk-
dc.identifier.emailKwan, AKH: khkwan@hkucc.hku.hk-
dc.identifier.authorityKwan, AKH=rp00127-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.cemconcomp.2019.103405-
dc.identifier.scopuseid_2-s2.0-85071726467-
dc.identifier.hkuros318215-
dc.identifier.volume104-
dc.identifier.spagearticle no. 103405-
dc.identifier.epagearticle no. 103405-
dc.identifier.isiWOS:000501649500068-
dc.publisher.placeUnited Kingdom-
dc.identifier.issnl0958-9465-

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