Reinforcement of flexion in concrete beams with carbon fiber cloak: anchorage mechanism
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , |
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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Acta scientiarum. Technology (Online) |
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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 |
_version_ |
1799315332146397184 |