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Influence of temperature cycles on bond between glass fiber-reinforced polymer and concrete

2013-11Artigo científico Acesso aberto
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dc.contributor.authorSilva, Manuel Américo Gonçalves da
dc.contributor.authorBiscaia, Hugo
dc.contributor.authorRodrigues, Carlos Chastre
dc.contributor.institutionUNIC - Centro de Investigação em Estruturas e Construção
dc.contributor.institutionDEC - Departamento de Engenharia Civil
dc.contributor.pblAmerican Concrete Institute
dc.date.accessioned2018-10-28T23:04:07Z
dc.date.available2018-10-28T23:04:07Z
dc.date.issued2013-11
dc.description.abstractReinforced concrete (RC) beams externally strengthened with glass fiber-reinforced polymer (GFRP) strips bonded to the soffi t may see their load-carrying capacity reduced due to environmental conditions—especially due to the deterioration of bond between the adhesively bonded laminates and concrete, causing premature failure. More research has been published on the detachment of the laminate progressing from the anchorage zone than on failure induced by the formation of fl exural or shear-fl exural cracks in the midspan followed by fi ber-reinforced polymer (FRP) separation and failure designated as intermediate crack (IC) debonding. An experimental program to study degradation of the GFRP laminate beam specimens after accelerated temperature cycles, namely: 1) freezing-and-thawing type; and 2) cycles of the same amplitude (40°C [104°F]) and an upper limit approximately 70% of the glass vitreous transition temperature of the resin, Tg, is described. Effects on the bond stress and ultimate capacity are reported. Substantial differences between shear and bending-induced failure and a decrease of bond stresses and engagement of the laminates on the structural response are analyzed.en
dc.description.versionproof
dc.description.versionpublished
dc.format.extent845004
dc.identifier.issn0889-3241
dc.identifier.otherPURE: 476855
dc.identifier.otherPURE UUID: ab5f81ed-968b-42d5-bb06-cf3732791926
dc.identifier.otherresearchoutputwizard: 41946
dc.identifier.otherScopus: 84887906134
dc.identifier.otherWOS: 000326427300007
dc.identifier.otherORCID: /0000-0002-7708-6995/work/53220475
dc.identifier.otherORCID: /0000-0002-4791-5123/work/174232080
dc.identifier.urihttp://hdl.handle.net/10362/50098
dc.language.isoeng
dc.peerreviewedyes
dc.subjectaccelerated aging
dc.subjecttemperature cycles
dc.subjectdegradation
dc.subjectglass fiber-reinforced polymer
dc.subjectbond stresses
dc.subjectAccelerated aging
dc.subjectBond stresses
dc.subjectDegradation
dc.subjectGlass fi berreinforced polymer
dc.subjectTemperature cycles
dc.titleInfluence of temperature cycles on bond between glass fiber-reinforced polymer and concreteen
dc.typejournal article
degois.publication.firstPage977
degois.publication.issue6
degois.publication.lastPage987
degois.publication.titleAci Structural Journal
degois.publication.volume110
dspace.entity.typePublication
rcaap.rightsopenAccess

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