Flexural behaviour of RC slabs strengthened with prestressed CFRP strips using different anchorage systems
Autor(a) principal: | |
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Data de Publicação: | 2015 |
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/1822/37331 |
Resumo: | The Externally Bonded Reinforcement (EBR) technique using Carbon Fiber-Reinforced Polymers (CFRP) has been commonly used to strengthen concrete structures in flexure. The use of prestressed CFRP material offers several advantages well-reported in the literature. Regardless of such as benefits, several studies on different topics are missing. The present work intends to contribute to the knowledge of two commercially available systems that differ on the type of anchorage: (i) the Mechanical Anchorage (MA), and (ii) the Gradient Anchorage (GA). For that purpose, an experimental program was carried out with twelve slabs monotonically tested under displacement control up to failure by using a four-point bending test configuration. The effect of type of anchorage system (MA and GA), prestrain level (0 and 0.4%), width (50 mm and 80 mm) and thickness (1.2 mm and 1.4 mm) of the CFRP laminate, and the surface preparation (grinded and sandblasted) on the flexural response were the main studied parameters. Better performance was observed for the slabs: (i) with prestressed laminates, (ii) for the MA system, and (iii) with sandblasted surface preparation. |
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Flexural behaviour of RC slabs strengthened with prestressed CFRP strips using different anchorage systemsCFRP laminatePrestressingAnchorageFlexural behaviorCarbon-carbon composites (CCCs)StrengthSurface analysisSurface treatmentsCFRP EBR prestress systemsA. Carbon-carbon composites (CCCs)B. StrengthD. Surface analysisE. Surface treatmentsEngenharia e Tecnologia::Engenharia CivilScience & TechnologyThe Externally Bonded Reinforcement (EBR) technique using Carbon Fiber-Reinforced Polymers (CFRP) has been commonly used to strengthen concrete structures in flexure. The use of prestressed CFRP material offers several advantages well-reported in the literature. Regardless of such as benefits, several studies on different topics are missing. The present work intends to contribute to the knowledge of two commercially available systems that differ on the type of anchorage: (i) the Mechanical Anchorage (MA), and (ii) the Gradient Anchorage (GA). For that purpose, an experimental program was carried out with twelve slabs monotonically tested under displacement control up to failure by using a four-point bending test configuration. The effect of type of anchorage system (MA and GA), prestrain level (0 and 0.4%), width (50 mm and 80 mm) and thickness (1.2 mm and 1.4 mm) of the CFRP laminate, and the surface preparation (grinded and sandblasted) on the flexural response were the main studied parameters. Better performance was observed for the slabs: (i) with prestressed laminates, (ii) for the MA system, and (iii) with sandblasted surface preparation.This work is supported by FEDER funds through the Operational Program for Competitiveness Factors - COMPETE and National Funds through FCT - Portuguese Foundation for Science and Technology under the project FRPreDur - PTDC/ECM-EST/2424/2012. The authors also like to thank all the companies that have been involved supporting and contributing for the development of this study, mainly: S&P Clever Reinforcement Iberica Lda, S&P Clever Reinforcement Company (Switzerland), Tecnipor - Gomes & Taveira Lda., Via lam - Industrias Metalurgicas e Metalomecanicas, Lda., Hilti Portugal-Produtos e Servicos, Lda. The first and second authors wish also to acknowledge the grants SFRH/BD/98309/2013 and SFRH/BD/94850/2013, respectively, provided by FCT.ElsevierUniversidade do MinhoCorreia, Luís Luciano GouveiaTeixeira, Tiago André NunesMichels, JulienAlmeida, João Alberto Pinheiro PereiraSena-Cruz, José20152015-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/37331eng1359-836810.1016/j.compositesb.2015.07.011info: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:RCAAP2023-07-21T12:07:08Zoai:repositorium.sdum.uminho.pt:1822/37331Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:57:59.748095Repositório 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 |
Flexural behaviour of RC slabs strengthened with prestressed CFRP strips using different anchorage systems |
title |
Flexural behaviour of RC slabs strengthened with prestressed CFRP strips using different anchorage systems |
spellingShingle |
Flexural behaviour of RC slabs strengthened with prestressed CFRP strips using different anchorage systems Correia, Luís Luciano Gouveia CFRP laminate Prestressing Anchorage Flexural behavior Carbon-carbon composites (CCCs) Strength Surface analysis Surface treatments CFRP EBR prestress systems A. Carbon-carbon composites (CCCs) B. Strength D. Surface analysis E. Surface treatments Engenharia e Tecnologia::Engenharia Civil Science & Technology |
title_short |
Flexural behaviour of RC slabs strengthened with prestressed CFRP strips using different anchorage systems |
title_full |
Flexural behaviour of RC slabs strengthened with prestressed CFRP strips using different anchorage systems |
title_fullStr |
Flexural behaviour of RC slabs strengthened with prestressed CFRP strips using different anchorage systems |
title_full_unstemmed |
Flexural behaviour of RC slabs strengthened with prestressed CFRP strips using different anchorage systems |
title_sort |
Flexural behaviour of RC slabs strengthened with prestressed CFRP strips using different anchorage systems |
author |
Correia, Luís Luciano Gouveia |
author_facet |
Correia, Luís Luciano Gouveia Teixeira, Tiago André Nunes Michels, Julien Almeida, João Alberto Pinheiro Pereira Sena-Cruz, José |
author_role |
author |
author2 |
Teixeira, Tiago André Nunes Michels, Julien Almeida, João Alberto Pinheiro Pereira Sena-Cruz, José |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Correia, Luís Luciano Gouveia Teixeira, Tiago André Nunes Michels, Julien Almeida, João Alberto Pinheiro Pereira Sena-Cruz, José |
dc.subject.por.fl_str_mv |
CFRP laminate Prestressing Anchorage Flexural behavior Carbon-carbon composites (CCCs) Strength Surface analysis Surface treatments CFRP EBR prestress systems A. Carbon-carbon composites (CCCs) B. Strength D. Surface analysis E. Surface treatments Engenharia e Tecnologia::Engenharia Civil Science & Technology |
topic |
CFRP laminate Prestressing Anchorage Flexural behavior Carbon-carbon composites (CCCs) Strength Surface analysis Surface treatments CFRP EBR prestress systems A. Carbon-carbon composites (CCCs) B. Strength D. Surface analysis E. Surface treatments Engenharia e Tecnologia::Engenharia Civil Science & Technology |
description |
The Externally Bonded Reinforcement (EBR) technique using Carbon Fiber-Reinforced Polymers (CFRP) has been commonly used to strengthen concrete structures in flexure. The use of prestressed CFRP material offers several advantages well-reported in the literature. Regardless of such as benefits, several studies on different topics are missing. The present work intends to contribute to the knowledge of two commercially available systems that differ on the type of anchorage: (i) the Mechanical Anchorage (MA), and (ii) the Gradient Anchorage (GA). For that purpose, an experimental program was carried out with twelve slabs monotonically tested under displacement control up to failure by using a four-point bending test configuration. The effect of type of anchorage system (MA and GA), prestrain level (0 and 0.4%), width (50 mm and 80 mm) and thickness (1.2 mm and 1.4 mm) of the CFRP laminate, and the surface preparation (grinded and sandblasted) on the flexural response were the main studied parameters. Better performance was observed for the slabs: (i) with prestressed laminates, (ii) for the MA system, and (iii) with sandblasted surface preparation. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015 2015-01-01T00:00:00Z |
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/1822/37331 |
url |
http://hdl.handle.net/1822/37331 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
1359-8368 10.1016/j.compositesb.2015.07.011 |
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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799132370122571776 |