Externally bonded reinforcement side extended (EBRSE) technique to postpone debonding of FRP laminates in strengthened concrete elements

Structural repair and strengthening have always been challenging tasks in construction. One of the most commonly applied techniques for Reinforced Concrete (RC) structures is the Externally Bonded Reinforcement (EBR). However, a persistent challenge with EBR is the premature debonding of FRP laminat...

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Autores: Agha Bagloo, Mehdi, Carreras Blasco, Laura, Barris Peña, Cristina, Codina Le Boudal, Alba, Baena Muñoz, Marta
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10256/27556
Acceso en línea:http://hdl.handle.net/10256/27556
Access Level:acceso abierto
Palabra clave:Formigó armat
Assaigs de materials
Reinforced concrete
Materials testing
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spelling Externally bonded reinforcement side extended (EBRSE) technique to postpone debonding of FRP laminates in strengthened concrete elementsAgha Bagloo, MehdiCarreras Blasco, LauraBarris Peña, CristinaCodina Le Boudal, AlbaBaena Muñoz, MartaFormigó armatAssaigs de materialsReinforced concreteMaterials testingStructural repair and strengthening have always been challenging tasks in construction. One of the most commonly applied techniques for Reinforced Concrete (RC) structures is the Externally Bonded Reinforcement (EBR). However, a persistent challenge with EBR is the premature debonding of FRP laminates from the concrete surface. In response, researchers have explored alternative techniques to improve this issue, leading to techniques such as Near-Surface Mounted (NSM) reinforcement, Externally Bonded Reinforcement on Grooves (EBROG), Externally Bonded Reinforcement in Grooves (EBRIG), and the use of mechanical fasteners. This study introduces and evaluates a new strengthening technique designed to enhance the conventional EBR approach while requiring minimal alterations to surface preparation, saving both time and costs. The proposed technique, presented as Externally Bonded Reinforcement Side Extended (EBRSE), involves applying resin to both lateral sides of the precured laminate parallel to the loading direction. In this work, single shear tests were conducted on concrete specimens using both EBRSE and conventional EBR techniques to compare their performance. Additionally, a numerical approach was applied, combining the finite difference method with a metaheuristic optimization algorithm, to derive the bond-slip law governing the constitutive behavior of both systems. The findings revealed that the EBRSE technique significantly outperformed the conventional EBR method, with an increase of up to 80 % in ultimate load capacity and up to 86 % in ultimate slip. Furthermore, the comparison between numerical predictions and experimental findings, specifically in terms of bond-slip law, load-slip curves, and strain distribution along the bonded FRP, confirmed an increase in fracture energy for the EBRSE techniqueThe authors acknowledge the support provided by the Spanish Ministry of Science, Innovation and Universities (MICIU/ AEI) through projects PID2020–119015GB-C22/MICIU/AEI/10.13039/501100011033 and PID2023–150934NB-C32/MICIU/AEI/10.13039/501100011033/FEDER, UE; M.A. acknowledges the support of University of Girona through research grant IFUdG 2021/01 cofunded by Banco Santander; L.C. acknowledges the grant RYC2021–032171-I funded by MCIN/AEI/ 10.13039/501100011033 and by “European Union NextGenerationEU/PRTRAgencia Estatal de Investigación2025info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionpeer-reviewedapplication/pdfhttp://hdl.handle.net/10256/27556http://hdl.handle.net/10256/27556Case Studies In Construction Materials, 2025, vol. 23, núm. e05066Articles publicats (D-EMCI)Agha Bagloo, Mehdi arreras Blasco, Laura Barris Peña, Cristina Codina Le Boudal, Alba Baena Muñoz, Marta 2025 Externally bonded reinforcement side extended (EBRSE) technique to postpone debonding of FRP laminates in strengthened concrete elements Case Studies In Construction Materials 23 e05066reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.cscm.2025.e05066info:eu-repo/semantics/altIdentifier/issn/2214-5095info:eu-repo/semantics/altIdentifier/eissn/2214-5095PID2020-119015GB-C22info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-119015GB-C22Reconeixement 4.0 Internacionalhttp://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessoai:recercat.cat:10256/275562026-05-29T05:05:01Z
dc.title.none.fl_str_mv Externally bonded reinforcement side extended (EBRSE) technique to postpone debonding of FRP laminates in strengthened concrete elements
title Externally bonded reinforcement side extended (EBRSE) technique to postpone debonding of FRP laminates in strengthened concrete elements
spellingShingle Externally bonded reinforcement side extended (EBRSE) technique to postpone debonding of FRP laminates in strengthened concrete elements
Agha Bagloo, Mehdi
Formigó armat
Assaigs de materials
Reinforced concrete
Materials testing
title_short Externally bonded reinforcement side extended (EBRSE) technique to postpone debonding of FRP laminates in strengthened concrete elements
title_full Externally bonded reinforcement side extended (EBRSE) technique to postpone debonding of FRP laminates in strengthened concrete elements
title_fullStr Externally bonded reinforcement side extended (EBRSE) technique to postpone debonding of FRP laminates in strengthened concrete elements
title_full_unstemmed Externally bonded reinforcement side extended (EBRSE) technique to postpone debonding of FRP laminates in strengthened concrete elements
title_sort Externally bonded reinforcement side extended (EBRSE) technique to postpone debonding of FRP laminates in strengthened concrete elements
dc.creator.none.fl_str_mv Agha Bagloo, Mehdi
Carreras Blasco, Laura
Barris Peña, Cristina
Codina Le Boudal, Alba
Baena Muñoz, Marta
author Agha Bagloo, Mehdi
author_facet Agha Bagloo, Mehdi
Carreras Blasco, Laura
Barris Peña, Cristina
Codina Le Boudal, Alba
Baena Muñoz, Marta
author_role author
author2 Carreras Blasco, Laura
Barris Peña, Cristina
Codina Le Boudal, Alba
Baena Muñoz, Marta
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Agencia Estatal de Investigación
dc.subject.none.fl_str_mv Formigó armat
Assaigs de materials
Reinforced concrete
Materials testing
topic Formigó armat
Assaigs de materials
Reinforced concrete
Materials testing
description Structural repair and strengthening have always been challenging tasks in construction. One of the most commonly applied techniques for Reinforced Concrete (RC) structures is the Externally Bonded Reinforcement (EBR). However, a persistent challenge with EBR is the premature debonding of FRP laminates from the concrete surface. In response, researchers have explored alternative techniques to improve this issue, leading to techniques such as Near-Surface Mounted (NSM) reinforcement, Externally Bonded Reinforcement on Grooves (EBROG), Externally Bonded Reinforcement in Grooves (EBRIG), and the use of mechanical fasteners. This study introduces and evaluates a new strengthening technique designed to enhance the conventional EBR approach while requiring minimal alterations to surface preparation, saving both time and costs. The proposed technique, presented as Externally Bonded Reinforcement Side Extended (EBRSE), involves applying resin to both lateral sides of the precured laminate parallel to the loading direction. In this work, single shear tests were conducted on concrete specimens using both EBRSE and conventional EBR techniques to compare their performance. Additionally, a numerical approach was applied, combining the finite difference method with a metaheuristic optimization algorithm, to derive the bond-slip law governing the constitutive behavior of both systems. The findings revealed that the EBRSE technique significantly outperformed the conventional EBR method, with an increase of up to 80 % in ultimate load capacity and up to 86 % in ultimate slip. Furthermore, the comparison between numerical predictions and experimental findings, specifically in terms of bond-slip law, load-slip curves, and strain distribution along the bonded FRP, confirmed an increase in fracture energy for the EBRSE technique
publishDate 2025
dc.date.none.fl_str_mv 2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
peer-reviewed
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10256/27556
http://hdl.handle.net/10256/27556
url http://hdl.handle.net/10256/27556
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cscm.2025.e05066
info:eu-repo/semantics/altIdentifier/issn/2214-5095
info:eu-repo/semantics/altIdentifier/eissn/2214-5095
PID2020-119015GB-C22
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-119015GB-C22
dc.rights.none.fl_str_mv Reconeixement 4.0 Internacional
http://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Reconeixement 4.0 Internacional
http://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Case Studies In Construction Materials, 2025, vol. 23, núm. e05066
Articles publicats (D-EMCI)
Agha Bagloo, Mehdi arreras Blasco, Laura Barris Peña, Cristina Codina Le Boudal, Alba Baena Muñoz, Marta 2025 Externally bonded reinforcement side extended (EBRSE) technique to postpone debonding of FRP laminates in strengthened concrete elements Case Studies In Construction Materials 23 e05066
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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