Exploring new NSM reinforcements for the flexural strengthening of RC beams: experimental and numerical research

Detalhes bibliográficos
Autor(a) principal: Rezazadeh, Mohammadali
Data de Publicação: 2016
Outros Autores: Cholostiakow, Szymon, Kotynia, Renata, Barros, Joaquim A. O.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/43545
Resumo: Carbon-fiber-reinforced-polymer (CFRP) composite materials applied according to near-surface-mounted (NSM) technique constitute an effective technique for the flexural and shear strengthening of reinforced-concrete (RC) structures. However, the NSM CFRP reinforcement ratio is limited by the thickness of concrete cover of the longitudinal tensile steel bars, and the minimum distance between consecutive CFRPs, below which premature fracture of surrounding concrete occurs due to group effect. Hence, the current study aims to experimentally and numerically evaluate the strengthening potentialities of a novel NSM system (with high CFRP ratio capability) for the flexural strengthening of RC beams. This new system combines externally-bonded-reinforcement (EBR) and NSM techniques in the same application using T-shaped CFRP profiles. The obtained experimental results of the RC beams strengthened with CFRP profiles are presented and discussed with the aim of evaluating the influence of CFRP profile reinforcement ratio on the strengthening efficiency of this technique. A developed 3D finite-element (FE) approach is used to simulate the experimental tests. After demonstrating its good predictive performance, a series of parametric studies is performed to assess the influence of the main material properties, and ratio of bond area to cross sectional area of the CFRP profiles on the efficiency of the proposed system.
id RCAP_81b0d9385daeea33ef5d6194921c47d1
oai_identifier_str oai:repositorium.sdum.uminho.pt:1822/43545
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling Exploring new NSM reinforcements for the flexural strengthening of RC beams: experimental and numerical researchCarbon fiber reinforced polymerT-shaped CFRP profileFlexural strengtheningRC beamsFEMMaterial nonlinear analysisParametric studiesScience & TechnologyCarbon-fiber-reinforced-polymer (CFRP) composite materials applied according to near-surface-mounted (NSM) technique constitute an effective technique for the flexural and shear strengthening of reinforced-concrete (RC) structures. However, the NSM CFRP reinforcement ratio is limited by the thickness of concrete cover of the longitudinal tensile steel bars, and the minimum distance between consecutive CFRPs, below which premature fracture of surrounding concrete occurs due to group effect. Hence, the current study aims to experimentally and numerically evaluate the strengthening potentialities of a novel NSM system (with high CFRP ratio capability) for the flexural strengthening of RC beams. This new system combines externally-bonded-reinforcement (EBR) and NSM techniques in the same application using T-shaped CFRP profiles. The obtained experimental results of the RC beams strengthened with CFRP profiles are presented and discussed with the aim of evaluating the influence of CFRP profile reinforcement ratio on the strengthening efficiency of this technique. A developed 3D finite-element (FE) approach is used to simulate the experimental tests. After demonstrating its good predictive performance, a series of parametric studies is performed to assess the influence of the main material properties, and ratio of bond area to cross sectional area of the CFRP profiles on the efficiency of the proposed system.The first and the last authors acknowledge the support provided by Cutinov QREN project n. 38780 supported by ADI, co-financed by the European Regional Development Fund (FEDER) through the Operational Program COMPETE. The second and the third authors would like to acknowledge the support provided by Mostostal Warszawa S.A. for providing the CFRP T-shaped profiles and for co-funding the research programElsevierUniversidade do MinhoRezazadeh, MohammadaliCholostiakow, SzymonKotynia, RenataBarros, Joaquim A. O.2016-052016-05-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/43545eng0263-822310.1016/j.compstruct.2016.01.033info: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:RCAAP2023-07-21T12:51:48Zoai:repositorium.sdum.uminho.pt:1822/43545Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:50:48.160312Repositório 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 Exploring new NSM reinforcements for the flexural strengthening of RC beams: experimental and numerical research
title Exploring new NSM reinforcements for the flexural strengthening of RC beams: experimental and numerical research
spellingShingle Exploring new NSM reinforcements for the flexural strengthening of RC beams: experimental and numerical research
Rezazadeh, Mohammadali
Carbon fiber reinforced polymer
T-shaped CFRP profile
Flexural strengthening
RC beams
FEM
Material nonlinear analysis
Parametric studies
Science & Technology
title_short Exploring new NSM reinforcements for the flexural strengthening of RC beams: experimental and numerical research
title_full Exploring new NSM reinforcements for the flexural strengthening of RC beams: experimental and numerical research
title_fullStr Exploring new NSM reinforcements for the flexural strengthening of RC beams: experimental and numerical research
title_full_unstemmed Exploring new NSM reinforcements for the flexural strengthening of RC beams: experimental and numerical research
title_sort Exploring new NSM reinforcements for the flexural strengthening of RC beams: experimental and numerical research
author Rezazadeh, Mohammadali
author_facet Rezazadeh, Mohammadali
Cholostiakow, Szymon
Kotynia, Renata
Barros, Joaquim A. O.
author_role author
author2 Cholostiakow, Szymon
Kotynia, Renata
Barros, Joaquim A. O.
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Rezazadeh, Mohammadali
Cholostiakow, Szymon
Kotynia, Renata
Barros, Joaquim A. O.
dc.subject.por.fl_str_mv Carbon fiber reinforced polymer
T-shaped CFRP profile
Flexural strengthening
RC beams
FEM
Material nonlinear analysis
Parametric studies
Science & Technology
topic Carbon fiber reinforced polymer
T-shaped CFRP profile
Flexural strengthening
RC beams
FEM
Material nonlinear analysis
Parametric studies
Science & Technology
description Carbon-fiber-reinforced-polymer (CFRP) composite materials applied according to near-surface-mounted (NSM) technique constitute an effective technique for the flexural and shear strengthening of reinforced-concrete (RC) structures. However, the NSM CFRP reinforcement ratio is limited by the thickness of concrete cover of the longitudinal tensile steel bars, and the minimum distance between consecutive CFRPs, below which premature fracture of surrounding concrete occurs due to group effect. Hence, the current study aims to experimentally and numerically evaluate the strengthening potentialities of a novel NSM system (with high CFRP ratio capability) for the flexural strengthening of RC beams. This new system combines externally-bonded-reinforcement (EBR) and NSM techniques in the same application using T-shaped CFRP profiles. The obtained experimental results of the RC beams strengthened with CFRP profiles are presented and discussed with the aim of evaluating the influence of CFRP profile reinforcement ratio on the strengthening efficiency of this technique. A developed 3D finite-element (FE) approach is used to simulate the experimental tests. After demonstrating its good predictive performance, a series of parametric studies is performed to assess the influence of the main material properties, and ratio of bond area to cross sectional area of the CFRP profiles on the efficiency of the proposed system.
publishDate 2016
dc.date.none.fl_str_mv 2016-05
2016-05-01T00:00:00Z
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/1822/43545
url http://hdl.handle.net/1822/43545
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0263-8223
10.1016/j.compstruct.2016.01.033
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
repository.mail.fl_str_mv
_version_ 1799133094143328256

Registros relacionados