Effect of fatigue loading on flexural performance of NSM CFRP-strengthened RC beams under different service temperatures

Detalhes bibliográficos
Autor(a) principal: Jahani, Younes
Data de Publicação: 2022
Outros Autores: Baena, Marta, Barris, Cristina, Torres, Lluís, Sena-Cruz, José
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: https://hdl.handle.net/1822/86221
Resumo: This paper presents an experimental work to investigate the effect of fatigue loading and high service temperature on the flexural performance of near-surface mounted (NSM) carbon fiber reinforced polymer (CFRP)-strengthened reinforced concrete (RC) beams. The experimental program included 11 beams, where the effect of the strengthening (CFRP) ratio (0.06 % and 0.18 %), fatigue load level (R1 = 0.57 and R2 = 0.38) and applied temperature (20 °C and 70 °C) have been considered. Experimental results on fatigue tests showed that high service temperature resulted in an increase in deflections and reduction in the stiffness of the specimens along the test. Moreover, the application of fatigue cycles with larger amplitude resulted in the failure of the specimens (by steel rupture), whilst specimens submitted to lower fatigue amplitude survived to the fatigue cycles. The NSM CFRP-strengthening helped to postpone the final failure of strengthened RC beams after steel reinforcement rupture during the fatigue test. Besides, damage due to fatigue derived in lower residual yielding and ultimate load in the post-fatigue test.
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spelling Effect of fatigue loading on flexural performance of NSM CFRP-strengthened RC beams under different service temperaturesFatigueNSM CFRP-strengtheningTemperatureExperimentalEngenharia e Tecnologia::Engenharia CivilIndústria, inovação e infraestruturasThis paper presents an experimental work to investigate the effect of fatigue loading and high service temperature on the flexural performance of near-surface mounted (NSM) carbon fiber reinforced polymer (CFRP)-strengthened reinforced concrete (RC) beams. The experimental program included 11 beams, where the effect of the strengthening (CFRP) ratio (0.06 % and 0.18 %), fatigue load level (R1 = 0.57 and R2 = 0.38) and applied temperature (20 °C and 70 °C) have been considered. Experimental results on fatigue tests showed that high service temperature resulted in an increase in deflections and reduction in the stiffness of the specimens along the test. Moreover, the application of fatigue cycles with larger amplitude resulted in the failure of the specimens (by steel rupture), whilst specimens submitted to lower fatigue amplitude survived to the fatigue cycles. The NSM CFRP-strengthening helped to postpone the final failure of strengthened RC beams after steel reinforcement rupture during the fatigue test. Besides, damage due to fatigue derived in lower residual yielding and ultimate load in the post-fatigue test.This research was supported by the Spanish Ministry of Science and Innovation (MCIN/ AEI) under project PID2020-119015GB-C22, the Generalitat de Catalunya under the grant number 2019FI_B 00054 and mobility grant from Universitat de Girona (MOB 2021).ElsevierUniversidade do MinhoJahani, YounesBaena, MartaBarris, CristinaTorres, LluísSena-Cruz, José2022-10-252022-10-25T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/86221eng0141-02961873-732310.1016/j.engstruct.2022.115119115119https://www.sciencedirect.com/science/article/pii/S0141029622011956?via%3Dihubinfo: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:RCAAP2023-09-02T01:20:31Zoai:repositorium.sdum.uminho.pt:1822/86221Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:28:01.134681Repositório 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 Effect of fatigue loading on flexural performance of NSM CFRP-strengthened RC beams under different service temperatures
title Effect of fatigue loading on flexural performance of NSM CFRP-strengthened RC beams under different service temperatures
spellingShingle Effect of fatigue loading on flexural performance of NSM CFRP-strengthened RC beams under different service temperatures
Jahani, Younes
Fatigue
NSM CFRP-strengthening
Temperature
Experimental
Engenharia e Tecnologia::Engenharia Civil
Indústria, inovação e infraestruturas
title_short Effect of fatigue loading on flexural performance of NSM CFRP-strengthened RC beams under different service temperatures
title_full Effect of fatigue loading on flexural performance of NSM CFRP-strengthened RC beams under different service temperatures
title_fullStr Effect of fatigue loading on flexural performance of NSM CFRP-strengthened RC beams under different service temperatures
title_full_unstemmed Effect of fatigue loading on flexural performance of NSM CFRP-strengthened RC beams under different service temperatures
title_sort Effect of fatigue loading on flexural performance of NSM CFRP-strengthened RC beams under different service temperatures
author Jahani, Younes
author_facet Jahani, Younes
Baena, Marta
Barris, Cristina
Torres, Lluís
Sena-Cruz, José
author_role author
author2 Baena, Marta
Barris, Cristina
Torres, Lluís
Sena-Cruz, José
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Jahani, Younes
Baena, Marta
Barris, Cristina
Torres, Lluís
Sena-Cruz, José
dc.subject.por.fl_str_mv Fatigue
NSM CFRP-strengthening
Temperature
Experimental
Engenharia e Tecnologia::Engenharia Civil
Indústria, inovação e infraestruturas
topic Fatigue
NSM CFRP-strengthening
Temperature
Experimental
Engenharia e Tecnologia::Engenharia Civil
Indústria, inovação e infraestruturas
description This paper presents an experimental work to investigate the effect of fatigue loading and high service temperature on the flexural performance of near-surface mounted (NSM) carbon fiber reinforced polymer (CFRP)-strengthened reinforced concrete (RC) beams. The experimental program included 11 beams, where the effect of the strengthening (CFRP) ratio (0.06 % and 0.18 %), fatigue load level (R1 = 0.57 and R2 = 0.38) and applied temperature (20 °C and 70 °C) have been considered. Experimental results on fatigue tests showed that high service temperature resulted in an increase in deflections and reduction in the stiffness of the specimens along the test. Moreover, the application of fatigue cycles with larger amplitude resulted in the failure of the specimens (by steel rupture), whilst specimens submitted to lower fatigue amplitude survived to the fatigue cycles. The NSM CFRP-strengthening helped to postpone the final failure of strengthened RC beams after steel reinforcement rupture during the fatigue test. Besides, damage due to fatigue derived in lower residual yielding and ultimate load in the post-fatigue test.
publishDate 2022
dc.date.none.fl_str_mv 2022-10-25
2022-10-25T00:00:00Z
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 https://hdl.handle.net/1822/86221
url https://hdl.handle.net/1822/86221
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0141-0296
1873-7323
10.1016/j.engstruct.2022.115119
115119
https://www.sciencedirect.com/science/article/pii/S0141029622011956?via%3Dihub
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
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