Shear strengthening of RC beams with thin panels of mortar reinforced with recycled steel fibres

Detalhes bibliográficos
Autor(a) principal: Lourenço, Lúcio
Data de Publicação: 2018
Outros Autores: Zamanzadeh, Ziaaddin, Barros, Joaquim A. O., Rezazadeh, Mohammadali
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/58687
Resumo: The use of thin cement based panels reinforced with relatively high content of Recycled Steel Fibres (RSF) for the shear strengthening of Reinforced Concrete (RC) beams is investigated in the present work. The mechanical properties of this Recycled Steel Fibre Reinforced Mortar (RSFRM) are characterised. The panels are produced by using a mixing technique similar to the one used in the slurry infiltrated fibre concrete technology. Then, their potentialities as a shear strengthening solution for RC beams deficiently reinforced in shear are investigated by performing three-point bending tests with RC beams of "I" shape cross section. The RSFRM panels are applied in the lateral faces of the beams by using the two following strategies: (1) bonded to the concrete substrate by applying exclusively epoxy adhesive; and (2) besides epoxy adhesive, mechanical fasteners are applied. The applicability of an analytical approach for estimating the contribution of RSFRM panels for the shear resistance of RC beams is assessed, and a design example is presented.
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spelling Shear strengthening of RC beams with thin panels of mortar reinforced with recycled steel fibresRecycled steel fibreCement based mortarShear strengtheningFEM analysisNumerical simulationAnalytical approachScience & TechnologyThe use of thin cement based panels reinforced with relatively high content of Recycled Steel Fibres (RSF) for the shear strengthening of Reinforced Concrete (RC) beams is investigated in the present work. The mechanical properties of this Recycled Steel Fibre Reinforced Mortar (RSFRM) are characterised. The panels are produced by using a mixing technique similar to the one used in the slurry infiltrated fibre concrete technology. Then, their potentialities as a shear strengthening solution for RC beams deficiently reinforced in shear are investigated by performing three-point bending tests with RC beams of "I" shape cross section. The RSFRM panels are applied in the lateral faces of the beams by using the two following strategies: (1) bonded to the concrete substrate by applying exclusively epoxy adhesive; and (2) besides epoxy adhesive, mechanical fasteners are applied. The applicability of an analytical approach for estimating the contribution of RSFRM panels for the shear resistance of RC beams is assessed, and a design example is presented.The authors would acknowledge the contribution of CiviTest Company on the production of the specimens and RC beams, and on the execution of the experimental program of the RC beams. The authors wish also to acknowledge the support provided by BioSafe company on providing gratuity the RSF for the experimental program. The third author wish to acknowledge the grant SFRH/BSAB/114302/2016 provided by FCT. The support provided by the PTDC/ECM-EST/2635/2014 FCT project is also acknowledged.info:eu-repo/semantics/publishedVersionElsevierUniversidade do MinhoLourenço, LúcioZamanzadeh, ZiaaddinBarros, Joaquim A. O.Rezazadeh, Mohammadali20182018-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/58687eng0959-65261879-178610.1016/j.jclepro.2018.05.096info: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:RCAAP2023-07-21T12:31:10Zoai:repositorium.sdum.uminho.pt:1822/58687Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:26:24.781410Repositório 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 beams with thin panels of mortar reinforced with recycled steel fibres
title Shear strengthening of RC beams with thin panels of mortar reinforced with recycled steel fibres
spellingShingle Shear strengthening of RC beams with thin panels of mortar reinforced with recycled steel fibres
Lourenço, Lúcio
Recycled steel fibre
Cement based mortar
Shear strengthening
FEM analysis
Numerical simulation
Analytical approach
Science & Technology
title_short Shear strengthening of RC beams with thin panels of mortar reinforced with recycled steel fibres
title_full Shear strengthening of RC beams with thin panels of mortar reinforced with recycled steel fibres
title_fullStr Shear strengthening of RC beams with thin panels of mortar reinforced with recycled steel fibres
title_full_unstemmed Shear strengthening of RC beams with thin panels of mortar reinforced with recycled steel fibres
title_sort Shear strengthening of RC beams with thin panels of mortar reinforced with recycled steel fibres
author Lourenço, Lúcio
author_facet Lourenço, Lúcio
Zamanzadeh, Ziaaddin
Barros, Joaquim A. O.
Rezazadeh, Mohammadali
author_role author
author2 Zamanzadeh, Ziaaddin
Barros, Joaquim A. O.
Rezazadeh, Mohammadali
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Lourenço, Lúcio
Zamanzadeh, Ziaaddin
Barros, Joaquim A. O.
Rezazadeh, Mohammadali
dc.subject.por.fl_str_mv Recycled steel fibre
Cement based mortar
Shear strengthening
FEM analysis
Numerical simulation
Analytical approach
Science & Technology
topic Recycled steel fibre
Cement based mortar
Shear strengthening
FEM analysis
Numerical simulation
Analytical approach
Science & Technology
description The use of thin cement based panels reinforced with relatively high content of Recycled Steel Fibres (RSF) for the shear strengthening of Reinforced Concrete (RC) beams is investigated in the present work. The mechanical properties of this Recycled Steel Fibre Reinforced Mortar (RSFRM) are characterised. The panels are produced by using a mixing technique similar to the one used in the slurry infiltrated fibre concrete technology. Then, their potentialities as a shear strengthening solution for RC beams deficiently reinforced in shear are investigated by performing three-point bending tests with RC beams of "I" shape cross section. The RSFRM panels are applied in the lateral faces of the beams by using the two following strategies: (1) bonded to the concrete substrate by applying exclusively epoxy adhesive; and (2) besides epoxy adhesive, mechanical fasteners are applied. The applicability of an analytical approach for estimating the contribution of RSFRM panels for the shear resistance of RC beams is assessed, and a design example is presented.
publishDate 2018
dc.date.none.fl_str_mv 2018
2018-01-01T00:00:00Z
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/1822/58687
url http://hdl.handle.net/1822/58687
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0959-6526
1879-1786
10.1016/j.jclepro.2018.05.096
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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