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Interface Shear Transfer on Composite Concrete Members

2014-01-01Artigo científico Acesso aberto
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datacite.subject.fosEngenharia e Tecnologia::Engenharia Civil
datacite.subject.sdg09:Indústria, Inovação e Infraestruturas
datacite.subject.sdg11:Cidades e Comunidades Sustentáveis
dc.contributor.authorSantos, Pedro M. D.
dc.contributor.authorJúlio, Eduardo N. B. S.
dc.date.accessioned2026-06-12T11:15:49Z
dc.date.available2026-06-12T11:15:49Z
dc.date.issued2014-01-01
dc.description.abstractThe "shear-friction theory" was adopted in design codes to predict the longitudinal shear strength between parts of concrete members cast at different times. This is a relevant subject for different situations, such as the connection between precast members with castin- place parts and strengthening of existing reinforced concrete (RC) members with a new concrete layer. The bond strength of the interface is controlled by parameters such as the substrate roughness, curing conditions, and the material strength and stiffness of both concrete layers, among others. Some of these for example, differential shrinkage due to different curing conditions, and differential stiffness due to the difference in the Young's modulus of each layer are not addressed in codes. This paper presents recommendations and proposes an alternative design approach for concrete-to-concrete interfaces that can be adopted in future revisions of ACI 318 and Eurocode 2. A comparison between ACI 318 and Eurocode 2 is presented.eng
dc.description.sponsorshipThis research project has been funded by the Portuguese Science and Technology Foundation (FCT) with reference PTDC/ECM/098497/2008. The authors acknowledge the financial support of the companies MAPREL—Empresa de Pavimentos e Materiais Pré-Esforçados Lda, SIKA Portugal SA, AFAssociados—Projectos de Engenharia SA, Weber Cimenfix, Cimpor—Cimentos de Portugal, Betão-Liz, and Euro-Planning— Engenharia & Gestão Lda.
dc.identifier.citationSantos, Pedro & Júlio, Eduardo. (2014). Interface Shear Transfer on Composite Concrete Members. Aci Structural Journal. 111. 113-122. DOI: https://doi.org/10.14359/51686543.
dc.identifier.doi10.14359/51686543
dc.identifier.issn0889-3241
dc.identifier.urihttp://hdl.handle.net/10400.8/16409
dc.language.isoeng
dc.peerreviewedyes
dc.publisherAmerican Concrete Institute
dc.relationINTELLIGENT SUPER SKIN - Enhanced Durability for Concrete Members
dc.relation.hasversionhttps://www.concrete.org/publications/internationalconcreteabstractsportal.aspx?m=details&id=51686543
dc.relation.ispartofACI Structural Journal
dc.rights.uriN/A
dc.subjectcodes
dc.subjectinterface
dc.subjectrepair
dc.subjectroughness
dc.subjectshear
dc.subjectshrinkage
dc.subjectstandards
dc.subjectstiffness
dc.titleInterface Shear Transfer on Composite Concrete Memberseng
dc.typejournal article
dspace.entity.typePublication
oaire.awardNumberPTDC/ECM/098497/2008
oaire.awardTitleINTELLIGENT SUPER SKIN - Enhanced Durability for Concrete Members
oaire.awardURIhttp://hdl.handle.net/10400.8/16408
oaire.citation.endPage122
oaire.citation.issue1
oaire.citation.startPage113
oaire.citation.titleACI Structural Journal
oaire.citation.volume111
oaire.fundingStreamConcurso para Projectos de I&D em todos os Domínios Científicos - 2008
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameSantos
person.givenNamePedro
person.identifier.orcid0000-0001-8193-8399
relation.isAuthorOfPublication2472a851-5aac-47f5-a088-2b276e9bd097
relation.isAuthorOfPublication.latestForDiscovery2472a851-5aac-47f5-a088-2b276e9bd097
relation.isProjectOfPublication4c5003b6-4e9b-4649-93e8-319b9ecb8e72
relation.isProjectOfPublication.latestForDiscovery4c5003b6-4e9b-4649-93e8-319b9ecb8e72

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The "shear-friction theory" was adopted in design codes to predict the longitudinal shear strength between parts of concrete members cast at different times. This is a relevant subject for different situations, such as the connection between precast members with castin- place parts and strengthening of existing reinforced concrete (RC) members with a new concrete layer. The bond strength of the interface is controlled by parameters such as the substrate roughness, curing conditions, and the material strength and stiffness of both concrete layers, among others. Some of these for example, differential shrinkage due to different curing conditions, and differential stiffness due to the difference in the Young's modulus of each layer are not addressed in codes. This paper presents recommendations and proposes an alternative design approach for concrete-to-concrete interfaces that can be adopted in future revisions of ACI 318 and Eurocode 2. A comparison between ACI 318 and Eurocode 2 is presented.
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