Experimental study on the bond behaviour of a transversely compressed mechanical anchorage system for externally bonded reinforcement
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/58588 |
Resumo: | This paper presents an experimental programme aiming at studying the bond behaviour of carbon-FRP (CFRP) for externally bonded reinforcement (EBR) systems mechanically anchored to concrete. Eleven large scale pull-out tests were carried out using concrete blocks of 200 mm × 500 mm × 800 mm. In each block a single CFRP laminate was mounted using the EBR technique and mechanically fixed to concrete through a commercial mechanical anchorage with different levels of transverse compression. The blocks were tested under a pull-out configuration until failure. The study of the CFRP EBR system comprises not only the mechanical anchorage but also the subsequent CFRP EBR laminate bonded to concrete. The debonding load is observed to be dependent on the laminate width, as expected, and a good relationship between the experimental results and analytical predictions is found. A model of the local bond shear stress-slip law in the bonded zone is adopted and calibrated to the experimental results taking into account the roughness of the concrete surface. Moreover, the effects of the laminate width and the compressive stress level on the anchorage effectiveness are evaluated. Results show that the mechanical anchorage generally provides adequate transverse compression of the CFRP laminate to concrete surface. |
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Experimental study on the bond behaviour of a transversely compressed mechanical anchorage system for externally bonded reinforcementCFRPBond behaviourTransverse compressionEBRScience & TechnologyThis paper presents an experimental programme aiming at studying the bond behaviour of carbon-FRP (CFRP) for externally bonded reinforcement (EBR) systems mechanically anchored to concrete. Eleven large scale pull-out tests were carried out using concrete blocks of 200 mm × 500 mm × 800 mm. In each block a single CFRP laminate was mounted using the EBR technique and mechanically fixed to concrete through a commercial mechanical anchorage with different levels of transverse compression. The blocks were tested under a pull-out configuration until failure. The study of the CFRP EBR system comprises not only the mechanical anchorage but also the subsequent CFRP EBR laminate bonded to concrete. The debonding load is observed to be dependent on the laminate width, as expected, and a good relationship between the experimental results and analytical predictions is found. A model of the local bond shear stress-slip law in the bonded zone is adopted and calibrated to the experimental results taking into account the roughness of the concrete surface. Moreover, the effects of the laminate width and the compressive stress level on the anchorage effectiveness are evaluated. Results show that the mechanical anchorage generally provides adequate transverse compression of the CFRP laminate to concrete surface.S&P Clever Reinforcement Ibérica Lda. PTDC/ECM-EST/1282/2014info:eu-repo/semantics/publishedVersionElsevierUniversidade do MinhoBarris, CristinaCorreia, Luís Luciano GouveiaSena-Cruz, José20182018-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/58588eng0263-822310.1016/j.compstruct.2018.05.084info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:09:53Zoai:repositorium.sdum.uminho.pt:1822/58588Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:01:25.973483Repositório 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 |
Experimental study on the bond behaviour of a transversely compressed mechanical anchorage system for externally bonded reinforcement |
title |
Experimental study on the bond behaviour of a transversely compressed mechanical anchorage system for externally bonded reinforcement |
spellingShingle |
Experimental study on the bond behaviour of a transversely compressed mechanical anchorage system for externally bonded reinforcement Barris, Cristina CFRP Bond behaviour Transverse compression EBR Science & Technology |
title_short |
Experimental study on the bond behaviour of a transversely compressed mechanical anchorage system for externally bonded reinforcement |
title_full |
Experimental study on the bond behaviour of a transversely compressed mechanical anchorage system for externally bonded reinforcement |
title_fullStr |
Experimental study on the bond behaviour of a transversely compressed mechanical anchorage system for externally bonded reinforcement |
title_full_unstemmed |
Experimental study on the bond behaviour of a transversely compressed mechanical anchorage system for externally bonded reinforcement |
title_sort |
Experimental study on the bond behaviour of a transversely compressed mechanical anchorage system for externally bonded reinforcement |
author |
Barris, Cristina |
author_facet |
Barris, Cristina Correia, Luís Luciano Gouveia Sena-Cruz, José |
author_role |
author |
author2 |
Correia, Luís Luciano Gouveia Sena-Cruz, José |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Barris, Cristina Correia, Luís Luciano Gouveia Sena-Cruz, José |
dc.subject.por.fl_str_mv |
CFRP Bond behaviour Transverse compression EBR Science & Technology |
topic |
CFRP Bond behaviour Transverse compression EBR Science & Technology |
description |
This paper presents an experimental programme aiming at studying the bond behaviour of carbon-FRP (CFRP) for externally bonded reinforcement (EBR) systems mechanically anchored to concrete. Eleven large scale pull-out tests were carried out using concrete blocks of 200 mm × 500 mm × 800 mm. In each block a single CFRP laminate was mounted using the EBR technique and mechanically fixed to concrete through a commercial mechanical anchorage with different levels of transverse compression. The blocks were tested under a pull-out configuration until failure. The study of the CFRP EBR system comprises not only the mechanical anchorage but also the subsequent CFRP EBR laminate bonded to concrete. The debonding load is observed to be dependent on the laminate width, as expected, and a good relationship between the experimental results and analytical predictions is found. A model of the local bond shear stress-slip law in the bonded zone is adopted and calibrated to the experimental results taking into account the roughness of the concrete surface. Moreover, the effects of the laminate width and the compressive stress level on the anchorage effectiveness are evaluated. Results show that the mechanical anchorage generally provides adequate transverse compression of the CFRP laminate to concrete surface. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018 2018-01-01T00:00:00Z |
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 |
http://hdl.handle.net/1822/58588 |
url |
http://hdl.handle.net/1822/58588 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0263-8223 10.1016/j.compstruct.2018.05.084 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
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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1799132413096361984 |