Efficiency of different techniques in flexural strengthening of RC beams under monotonic and fatigue loading
Autor(a) principal: | |
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Data de Publicação: | 2012 |
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/1822/14773 |
Resumo: | In the context of flexural strengthening of concrete structures, fiber reinforced polymers (FRP) have been used mostly by two main techniques: Externally Bonded Reinforcement (EBR) and Near-Surface Mounted (NSM). Both strengthening techniques are applied on the cover concrete, which is normally the weakest region of the element to be strengthened. Consequently, the most common problem is the premature failure of the strengthening system that occurs more frequently in the EBR one. In an attempt of overcoming this weakness, another technique has been proposed, called MF-EBR – Mechanically Fastened and Externally Bonded Reinforcement, which uses multi-directional carbon fiber laminates, simultaneously glued and anchored to concrete. To compare the efficiency of NSM, EBR and MF-EBR techniques, four-point bending tests with RC beams were carried out under monotonic and cyclic loading. In this work the tests are described in detail and the obtained results are discussed. Additionally, to assess the performance of a FEM-based computer program for the prediction of the behaviour of RC beams strengthening according to these techniques, the beams submitted to monotonic loading were numerically simulated. |
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Efficiency of different techniques in flexural strengthening of RC beams under monotonic and fatigue loadingFlexural strengtheningNSMEBRReinforced concrete beamsFatigueFEM modellingScience & TechnologyIn the context of flexural strengthening of concrete structures, fiber reinforced polymers (FRP) have been used mostly by two main techniques: Externally Bonded Reinforcement (EBR) and Near-Surface Mounted (NSM). Both strengthening techniques are applied on the cover concrete, which is normally the weakest region of the element to be strengthened. Consequently, the most common problem is the premature failure of the strengthening system that occurs more frequently in the EBR one. In an attempt of overcoming this weakness, another technique has been proposed, called MF-EBR – Mechanically Fastened and Externally Bonded Reinforcement, which uses multi-directional carbon fiber laminates, simultaneously glued and anchored to concrete. To compare the efficiency of NSM, EBR and MF-EBR techniques, four-point bending tests with RC beams were carried out under monotonic and cyclic loading. In this work the tests are described in detail and the obtained results are discussed. Additionally, to assess the performance of a FEM-based computer program for the prediction of the behaviour of RC beams strengthening according to these techniques, the beams submitted to monotonic loading were numerically simulated.FCT; Hilti Portugal - Productos e Serviços Lda.; S&P Clever Reinforcement Ibérica Lda.; SECIL; TSwaterjet, Lda.ElsevierUniversidade do MinhoSena-Cruz, JoséBarros, Joaquim A. O.Coelho, Mário Rui FreitasSilva, Luís F. F. T.20122012-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/14773eng0950-061810.1016/j.conbuildmat.2011.10.044http://www.sciencedirect.com/info: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:RCAAP2023-07-21T12:19:26Zoai:repositorium.sdum.uminho.pt:1822/14773Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:12:22.486453Repositório 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 |
Efficiency of different techniques in flexural strengthening of RC beams under monotonic and fatigue loading |
title |
Efficiency of different techniques in flexural strengthening of RC beams under monotonic and fatigue loading |
spellingShingle |
Efficiency of different techniques in flexural strengthening of RC beams under monotonic and fatigue loading Sena-Cruz, José Flexural strengthening NSM EBR Reinforced concrete beams Fatigue FEM modelling Science & Technology |
title_short |
Efficiency of different techniques in flexural strengthening of RC beams under monotonic and fatigue loading |
title_full |
Efficiency of different techniques in flexural strengthening of RC beams under monotonic and fatigue loading |
title_fullStr |
Efficiency of different techniques in flexural strengthening of RC beams under monotonic and fatigue loading |
title_full_unstemmed |
Efficiency of different techniques in flexural strengthening of RC beams under monotonic and fatigue loading |
title_sort |
Efficiency of different techniques in flexural strengthening of RC beams under monotonic and fatigue loading |
author |
Sena-Cruz, José |
author_facet |
Sena-Cruz, José Barros, Joaquim A. O. Coelho, Mário Rui Freitas Silva, Luís F. F. T. |
author_role |
author |
author2 |
Barros, Joaquim A. O. Coelho, Mário Rui Freitas Silva, Luís F. F. T. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Sena-Cruz, José Barros, Joaquim A. O. Coelho, Mário Rui Freitas Silva, Luís F. F. T. |
dc.subject.por.fl_str_mv |
Flexural strengthening NSM EBR Reinforced concrete beams Fatigue FEM modelling Science & Technology |
topic |
Flexural strengthening NSM EBR Reinforced concrete beams Fatigue FEM modelling Science & Technology |
description |
In the context of flexural strengthening of concrete structures, fiber reinforced polymers (FRP) have been used mostly by two main techniques: Externally Bonded Reinforcement (EBR) and Near-Surface Mounted (NSM). Both strengthening techniques are applied on the cover concrete, which is normally the weakest region of the element to be strengthened. Consequently, the most common problem is the premature failure of the strengthening system that occurs more frequently in the EBR one. In an attempt of overcoming this weakness, another technique has been proposed, called MF-EBR – Mechanically Fastened and Externally Bonded Reinforcement, which uses multi-directional carbon fiber laminates, simultaneously glued and anchored to concrete. To compare the efficiency of NSM, EBR and MF-EBR techniques, four-point bending tests with RC beams were carried out under monotonic and cyclic loading. In this work the tests are described in detail and the obtained results are discussed. Additionally, to assess the performance of a FEM-based computer program for the prediction of the behaviour of RC beams strengthening according to these techniques, the beams submitted to monotonic loading were numerically simulated. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012 2012-01-01T00:00:00Z |
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/1822/14773 |
url |
http://hdl.handle.net/1822/14773 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0950-0618 10.1016/j.conbuildmat.2011.10.044 http://www.sciencedirect.com/ |
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 |
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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) |
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 |
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1799132558716305408 |