Shear strengthening of RC T-section beams with low concrete using NSM CFRP laminates

Detalhes bibliográficos
Autor(a) principal: Barros, Joaquim A. O.
Data de Publicação: 2011
Outros Autores: Dias, Salvador J. E.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/12820
Resumo: The effectiveness of NSM technique with CFRP laminates for the shear strengthening of T-section RC beams of low strength concrete was assessed. Five NSM shear strengthening configurations (three CFRP orientations and two levels of CFRP percentage) were applied in RC beams with a steel stirrups percentage of 0.10% and of 0.17%. The results showed that: NSM technique is still effective in beams of low strength concrete; inclined are more effective than vertical laminates; the beam’s shear resistance increases with the CFRP percentage; the NSM strengthening effectiveness decreases with the increase of the steel stirrups percentage. Using available experimental results obtained with the same test set-up but using beams of higher strength concrete it can be concluded that as minimum is the concrete strength as less effective is the NSM technique. In general, the formulation proposed by Nanni et al. provided safe and acceptable estimates for the contribution of the NSM shear strengthening systems (the predicted values of the CFRP contribution for the shear resistance were 75% of the results registered experimentally).
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spelling Shear strengthening of RC T-section beams with low concrete using NSM CFRP laminatesNSMCFRP laminatesShear strengtheningT cross section RC beamsLow strength concreteScience & TechnologyThe effectiveness of NSM technique with CFRP laminates for the shear strengthening of T-section RC beams of low strength concrete was assessed. Five NSM shear strengthening configurations (three CFRP orientations and two levels of CFRP percentage) were applied in RC beams with a steel stirrups percentage of 0.10% and of 0.17%. The results showed that: NSM technique is still effective in beams of low strength concrete; inclined are more effective than vertical laminates; the beam’s shear resistance increases with the CFRP percentage; the NSM strengthening effectiveness decreases with the increase of the steel stirrups percentage. Using available experimental results obtained with the same test set-up but using beams of higher strength concrete it can be concluded that as minimum is the concrete strength as less effective is the NSM technique. In general, the formulation proposed by Nanni et al. provided safe and acceptable estimates for the contribution of the NSM shear strengthening systems (the predicted values of the CFRP contribution for the shear resistance were 75% of the results registered experimentally).Fundação para a Ciência e a Tecnologia (FCT) -PTDC/ECM/73099/2006.ElsevierUniversidade do MinhoBarros, Joaquim A. O.Dias, Salvador J. E.2011-022011-02-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/12820eng0958-946510.1016/j.cemconcomp.2010.10.002http://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:RCAAP2023-07-21T12:02:28Zoai:repositorium.sdum.uminho.pt:1822/12820Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:52:26.517921Repositório 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 Shear strengthening of RC T-section beams with low concrete using NSM CFRP laminates
title Shear strengthening of RC T-section beams with low concrete using NSM CFRP laminates
spellingShingle Shear strengthening of RC T-section beams with low concrete using NSM CFRP laminates
Barros, Joaquim A. O.
NSM
CFRP laminates
Shear strengthening
T cross section RC beams
Low strength concrete
Science & Technology
title_short Shear strengthening of RC T-section beams with low concrete using NSM CFRP laminates
title_full Shear strengthening of RC T-section beams with low concrete using NSM CFRP laminates
title_fullStr Shear strengthening of RC T-section beams with low concrete using NSM CFRP laminates
title_full_unstemmed Shear strengthening of RC T-section beams with low concrete using NSM CFRP laminates
title_sort Shear strengthening of RC T-section beams with low concrete using NSM CFRP laminates
author Barros, Joaquim A. O.
author_facet Barros, Joaquim A. O.
Dias, Salvador J. E.
author_role author
author2 Dias, Salvador J. E.
author2_role author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Barros, Joaquim A. O.
Dias, Salvador J. E.
dc.subject.por.fl_str_mv NSM
CFRP laminates
Shear strengthening
T cross section RC beams
Low strength concrete
Science & Technology
topic NSM
CFRP laminates
Shear strengthening
T cross section RC beams
Low strength concrete
Science & Technology
description The effectiveness of NSM technique with CFRP laminates for the shear strengthening of T-section RC beams of low strength concrete was assessed. Five NSM shear strengthening configurations (three CFRP orientations and two levels of CFRP percentage) were applied in RC beams with a steel stirrups percentage of 0.10% and of 0.17%. The results showed that: NSM technique is still effective in beams of low strength concrete; inclined are more effective than vertical laminates; the beam’s shear resistance increases with the CFRP percentage; the NSM strengthening effectiveness decreases with the increase of the steel stirrups percentage. Using available experimental results obtained with the same test set-up but using beams of higher strength concrete it can be concluded that as minimum is the concrete strength as less effective is the NSM technique. In general, the formulation proposed by Nanni et al. provided safe and acceptable estimates for the contribution of the NSM shear strengthening systems (the predicted values of the CFRP contribution for the shear resistance were 75% of the results registered experimentally).
publishDate 2011
dc.date.none.fl_str_mv 2011-02
2011-02-01T00:00:00Z
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/1822/12820
url http://hdl.handle.net/1822/12820
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0958-9465
10.1016/j.cemconcomp.2010.10.002
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
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
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