Durability of bond between NSM CFRP strips and concrete under real-time field and laboratory accelerated conditioning

Detalhes bibliográficos
Autor(a) principal: Cruz, José Ricardo Loureiro
Data de Publicação: 2022
Outros Autores: Correia, Luís Luciano Gouveia, Cabral-Fonseca, Susana, Sena-Cruz, José
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: https://hdl.handle.net/1822/86224
Resumo: This investigation addresses the durability of the adhesive bond between near-surface-mounted (NSM) carbon fiber-reinforced polymer (CFRP) strips and concrete, under real-time field conditioning and laboratory-accelerated conditioning. Four natural outdoor environments were considered in the experimental program to induce aging mainly by carbonation, freeze-thaw cycles, elevated temperatures, and airborne chlorides from seawater. Additionally, a control environment (20°C and 55% RH) and a water immersion environment under controlled temperature (20°C) were considered. The durability was studied mainly throughout the mechanical properties obtained from (1) the involved materials (concrete, epoxy adhesive, and CFRP strips); and (2) the bond specimens, with a period of exposure up to 2 years. The bond performance of NSM-CFRP strips to concrete was slightly affected by environments under investigation, being water immersion and freeze–thaw cycles the most deleterious ones. A maximum average bond strength decrease of approximately 12% was registered for the specimens immersed in water, while in the case of the outdoor environments, the maximum bond degradation (approximately 8%) occurred for the specimens of freeze–thaw cycles after 2-year exposure.
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spelling Durability of bond between NSM CFRP strips and concrete under real-time field and laboratory accelerated conditioningConcreteCFRPEpoxy adhesiveBond NSMDurabilityReal-time field conditioningLaboratory-accelerated conditioningEngenharia e Tecnologia::Engenharia CivilScience & TechnologyIndústria, inovação e infraestruturasThis investigation addresses the durability of the adhesive bond between near-surface-mounted (NSM) carbon fiber-reinforced polymer (CFRP) strips and concrete, under real-time field conditioning and laboratory-accelerated conditioning. Four natural outdoor environments were considered in the experimental program to induce aging mainly by carbonation, freeze-thaw cycles, elevated temperatures, and airborne chlorides from seawater. Additionally, a control environment (20°C and 55% RH) and a water immersion environment under controlled temperature (20°C) were considered. The durability was studied mainly throughout the mechanical properties obtained from (1) the involved materials (concrete, epoxy adhesive, and CFRP strips); and (2) the bond specimens, with a period of exposure up to 2 years. The bond performance of NSM-CFRP strips to concrete was slightly affected by environments under investigation, being water immersion and freeze–thaw cycles the most deleterious ones. A maximum average bond strength decrease of approximately 12% was registered for the specimens immersed in water, while in the case of the outdoor environments, the maximum bond degradation (approximately 8%) occurred for the specimens of freeze–thaw cycles after 2-year exposure.This work was carried out in the scope of the project FRPLongDur POCI-01-0145-FEDER-016900 (FCT PTDC/ECM-EST/1282/2014) and DURABLE-FRP (PTDC/ECI-EGC/4609/2020) funded by national funds through the Foundation for Science and Technology (FCT) and co-financed by the European Fund of the Regional Development (FEDER) through the Operational Program for Competitiveness and Internationalization (POCI) and the Lisbon Regional Operational Program and, partially financed by the project POCI-01-0145-FEDER-007633 and by FCT/MCTES through national funds (PIDDAC) under the R&D Unit Institute for Sustainability and Innovation in Structural Engineering (ISISE), under reference UIDB/04029/2020. The first author wishes also to acknowledge the grant SFRH/BD/131259/2017 provided by Fundação para a Ciência e a Tecnologia (FCT).American Society of Civil Engineers (ASCE)Universidade do MinhoCruz, José Ricardo LoureiroCorreia, Luís Luciano GouveiaCabral-Fonseca, SusanaSena-Cruz, José2022-09-122024-09-12T00:00:00Z2022-09-12T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/86224eng1090-02681943-561410.1061/(ASCE)CC.1943-5614.000126204022074https://ascelibrary.org/doi/abs/10.1061/%28ASCE%29CC.1943-5614.0001262info:eu-repo/semantics/embargoedAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-12-23T01:38:08Zoai:repositorium.sdum.uminho.pt:1822/86224Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:28:01.085540Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Durability of bond between NSM CFRP strips and concrete under real-time field and laboratory accelerated conditioning
title Durability of bond between NSM CFRP strips and concrete under real-time field and laboratory accelerated conditioning
spellingShingle Durability of bond between NSM CFRP strips and concrete under real-time field and laboratory accelerated conditioning
Cruz, José Ricardo Loureiro
Concrete
CFRP
Epoxy adhesive
Bond NSM
Durability
Real-time field conditioning
Laboratory-accelerated conditioning
Engenharia e Tecnologia::Engenharia Civil
Science & Technology
Indústria, inovação e infraestruturas
title_short Durability of bond between NSM CFRP strips and concrete under real-time field and laboratory accelerated conditioning
title_full Durability of bond between NSM CFRP strips and concrete under real-time field and laboratory accelerated conditioning
title_fullStr Durability of bond between NSM CFRP strips and concrete under real-time field and laboratory accelerated conditioning
title_full_unstemmed Durability of bond between NSM CFRP strips and concrete under real-time field and laboratory accelerated conditioning
title_sort Durability of bond between NSM CFRP strips and concrete under real-time field and laboratory accelerated conditioning
author Cruz, José Ricardo Loureiro
author_facet Cruz, José Ricardo Loureiro
Correia, Luís Luciano Gouveia
Cabral-Fonseca, Susana
Sena-Cruz, José
author_role author
author2 Correia, Luís Luciano Gouveia
Cabral-Fonseca, Susana
Sena-Cruz, José
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Cruz, José Ricardo Loureiro
Correia, Luís Luciano Gouveia
Cabral-Fonseca, Susana
Sena-Cruz, José
dc.subject.por.fl_str_mv Concrete
CFRP
Epoxy adhesive
Bond NSM
Durability
Real-time field conditioning
Laboratory-accelerated conditioning
Engenharia e Tecnologia::Engenharia Civil
Science & Technology
Indústria, inovação e infraestruturas
topic Concrete
CFRP
Epoxy adhesive
Bond NSM
Durability
Real-time field conditioning
Laboratory-accelerated conditioning
Engenharia e Tecnologia::Engenharia Civil
Science & Technology
Indústria, inovação e infraestruturas
description This investigation addresses the durability of the adhesive bond between near-surface-mounted (NSM) carbon fiber-reinforced polymer (CFRP) strips and concrete, under real-time field conditioning and laboratory-accelerated conditioning. Four natural outdoor environments were considered in the experimental program to induce aging mainly by carbonation, freeze-thaw cycles, elevated temperatures, and airborne chlorides from seawater. Additionally, a control environment (20°C and 55% RH) and a water immersion environment under controlled temperature (20°C) were considered. The durability was studied mainly throughout the mechanical properties obtained from (1) the involved materials (concrete, epoxy adhesive, and CFRP strips); and (2) the bond specimens, with a period of exposure up to 2 years. The bond performance of NSM-CFRP strips to concrete was slightly affected by environments under investigation, being water immersion and freeze–thaw cycles the most deleterious ones. A maximum average bond strength decrease of approximately 12% was registered for the specimens immersed in water, while in the case of the outdoor environments, the maximum bond degradation (approximately 8%) occurred for the specimens of freeze–thaw cycles after 2-year exposure.
publishDate 2022
dc.date.none.fl_str_mv 2022-09-12
2022-09-12T00:00:00Z
2024-09-12T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://hdl.handle.net/1822/86224
url https://hdl.handle.net/1822/86224
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1090-0268
1943-5614
10.1061/(ASCE)CC.1943-5614.0001262
04022074
https://ascelibrary.org/doi/abs/10.1061/%28ASCE%29CC.1943-5614.0001262
dc.rights.driver.fl_str_mv info:eu-repo/semantics/embargoedAccess
eu_rights_str_mv embargoedAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Society of Civil Engineers (ASCE)
publisher.none.fl_str_mv American Society of Civil Engineers (ASCE)
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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