Reinforcement of flexion in concrete beams with carbon fiber cloak: anchorage mechanism

Detalhes bibliográficos
Autor(a) principal: Ferrari, Vladimir José
Data de Publicação: 2008
Outros Autores: Padaratz, Ivo José, Loriggio, Daniel Domingues
Tipo de documento: Artigo
Idioma: por
Título da fonte: Acta scientiarum. Technology (Online)
Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2556
Resumo: Detachment of FRP (fiber reinforced plastic) laminates from the bottom face of the beams is an undesirable and complex problem. A sudden failure occurs, before the expected capacity of the strengthened beam is reached and without making use of the high tensile strength of the strengthening material. The aim of this study is to investigate the flexural behavior of reinforced concrete beams strengthened by FRP laminates, made of carbon fiber mats embedded in an epoxy matrix and bonded to the bottom face of the beam. Emphasis is given to the use of anchorage systems which are fixed at the beam ends in order to avoid premature detachment of the laminate and consequently to increase the flexural capacity of the beam. Nine beams were divided into five groups according to the anchorage system utilized. One of anchorage system has proved to be very efficient, increasing the flexural capacity of the beams to about 20%, as compared to the beams without any anchorage and to 95% as compared to the beam without strengthening.
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spelling Reinforcement of flexion in concrete beams with carbon fiber cloak: anchorage mechanismReforço à flexão em vigas de concreto armado com manta de fibra de carbono: mecanismos de incremento de ancoragemviga reforçadareforço à flexãodesprendimentoplásticos reforçadosreforço com plásticosancoragem3.01.00.00-3 Engenharia CivilDetachment of FRP (fiber reinforced plastic) laminates from the bottom face of the beams is an undesirable and complex problem. A sudden failure occurs, before the expected capacity of the strengthened beam is reached and without making use of the high tensile strength of the strengthening material. The aim of this study is to investigate the flexural behavior of reinforced concrete beams strengthened by FRP laminates, made of carbon fiber mats embedded in an epoxy matrix and bonded to the bottom face of the beam. Emphasis is given to the use of anchorage systems which are fixed at the beam ends in order to avoid premature detachment of the laminate and consequently to increase the flexural capacity of the beam. Nine beams were divided into five groups according to the anchorage system utilized. One of anchorage system has proved to be very efficient, increasing the flexural capacity of the beams to about 20%, as compared to the beams without any anchorage and to 95% as compared to the beam without strengthening.O desprendimento dos laminados de plásticos reforçados com fibras da face inferior tracionada das vigas reforçadas à flexão é um problema complexo e indesejável, pois ocorre sem aviso, antecipando a ruína da viga reforçada e impossibilitando o total aproveitamento das propriedades resistentes à tração do reforço. Neste trabalho estudou-se o comportamento de vigas de concreto armado, reforçadas à flexão com manta de fibra de carbono, e avaliou-se a incorporação de mecanismos de incremento de ancoragem para evitar o desprendimento prematuro da manta com conseqüente aumento da capacidade resistente à flexão da viga. Nove vigas foram divididas em cinco grupos em conformidade com mecanismo de incremento de ancoragem adotado. Um dos mecanismos, além de evitar o desprendimento prematuro do reforço, também proporcionou incremento na resistência à flexão mais de 95%, em relação à viga sem reforço, e incrementos em torno de 20%, em relação às vigas sem incremento de ancoragem.Universidade Estadual De Maringá2008-04-22info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/255610.4025/actascitechnol.v24i0.2556Acta Scientiarum. Technology; Vol 24 (2002); 1783-1791Acta Scientiarum. Technology; v. 24 (2002); 1783-17911806-25631807-8664reponame:Acta scientiarum. Technology (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2556/1577Ferrari, Vladimir JoséPadaratz, Ivo JoséLoriggio, Daniel Dominguesinfo:eu-repo/semantics/openAccess2024-05-17T13:02:46Zoai:periodicos.uem.br/ojs:article/2556Revistahttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/indexPUBhttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/oai||actatech@uem.br1807-86641806-2563opendoar:2024-05-17T13:02:46Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Reinforcement of flexion in concrete beams with carbon fiber cloak: anchorage mechanism
Reforço à flexão em vigas de concreto armado com manta de fibra de carbono: mecanismos de incremento de ancoragem
title Reinforcement of flexion in concrete beams with carbon fiber cloak: anchorage mechanism
spellingShingle Reinforcement of flexion in concrete beams with carbon fiber cloak: anchorage mechanism
Ferrari, Vladimir José
viga reforçada
reforço à flexão
desprendimento
plásticos reforçados
reforço com plásticos
ancoragem
3.01.00.00-3 Engenharia Civil
title_short Reinforcement of flexion in concrete beams with carbon fiber cloak: anchorage mechanism
title_full Reinforcement of flexion in concrete beams with carbon fiber cloak: anchorage mechanism
title_fullStr Reinforcement of flexion in concrete beams with carbon fiber cloak: anchorage mechanism
title_full_unstemmed Reinforcement of flexion in concrete beams with carbon fiber cloak: anchorage mechanism
title_sort Reinforcement of flexion in concrete beams with carbon fiber cloak: anchorage mechanism
author Ferrari, Vladimir José
author_facet Ferrari, Vladimir José
Padaratz, Ivo José
Loriggio, Daniel Domingues
author_role author
author2 Padaratz, Ivo José
Loriggio, Daniel Domingues
author2_role author
author
dc.contributor.author.fl_str_mv Ferrari, Vladimir José
Padaratz, Ivo José
Loriggio, Daniel Domingues
dc.subject.por.fl_str_mv viga reforçada
reforço à flexão
desprendimento
plásticos reforçados
reforço com plásticos
ancoragem
3.01.00.00-3 Engenharia Civil
topic viga reforçada
reforço à flexão
desprendimento
plásticos reforçados
reforço com plásticos
ancoragem
3.01.00.00-3 Engenharia Civil
description Detachment of FRP (fiber reinforced plastic) laminates from the bottom face of the beams is an undesirable and complex problem. A sudden failure occurs, before the expected capacity of the strengthened beam is reached and without making use of the high tensile strength of the strengthening material. The aim of this study is to investigate the flexural behavior of reinforced concrete beams strengthened by FRP laminates, made of carbon fiber mats embedded in an epoxy matrix and bonded to the bottom face of the beam. Emphasis is given to the use of anchorage systems which are fixed at the beam ends in order to avoid premature detachment of the laminate and consequently to increase the flexural capacity of the beam. Nine beams were divided into five groups according to the anchorage system utilized. One of anchorage system has proved to be very efficient, increasing the flexural capacity of the beams to about 20%, as compared to the beams without any anchorage and to 95% as compared to the beam without strengthening.
publishDate 2008
dc.date.none.fl_str_mv 2008-04-22
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2556
10.4025/actascitechnol.v24i0.2556
url http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2556
identifier_str_mv 10.4025/actascitechnol.v24i0.2556
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2556/1577
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 Universidade Estadual De Maringá
publisher.none.fl_str_mv Universidade Estadual De Maringá
dc.source.none.fl_str_mv Acta Scientiarum. Technology; Vol 24 (2002); 1783-1791
Acta Scientiarum. Technology; v. 24 (2002); 1783-1791
1806-2563
1807-8664
reponame:Acta scientiarum. Technology (Online)
instname:Universidade Estadual de Maringá (UEM)
instacron:UEM
instname_str Universidade Estadual de Maringá (UEM)
instacron_str UEM
institution UEM
reponame_str Acta scientiarum. Technology (Online)
collection Acta scientiarum. Technology (Online)
repository.name.fl_str_mv Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)
repository.mail.fl_str_mv ||actatech@uem.br
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