Mechanical model for the shear strength prediction of corrosion-damaged reinforced concrete slender and non slender beams

Steel corrosion in RC structures leads to a reduced reinforcement area, changes in steel mechanical properties, cracking and, eventually, concrete cover spalling, among other phenomena. Stirrups are generally small in diameter and, given their small concrete cover, they are more susceptible to corro...

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Authors: Cladera Bohigas, Antoni, Marí Bernat, Antonio Ricardo|||0000-0002-0994-0715, Ribas González, Carlos Rodrigo
Format: article
Publication Date:2021
Country:España
Institution:Universitat Politècnica de Catalunya (UPC)
Repository:UPCommons. Portal del coneixement obert de la UPC
Language:English
OAI Identifier:oai:upcommons.upc.edu:2117/355919
Online Access:https://hdl.handle.net/2117/355919
https://dx.doi.org/10.1016/j.engstruct.2021.113163
Access Level:Open access
Keyword:Reinforced concrete -- Testing
Reinforced concrete--Mechanical properties
Shear strength
Reinforced concrete
Stirrup
Corrosion
Deterioration
Mechanical model
Slender beams
Short beams
Formigó armat -- Proves
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
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spelling Mechanical model for the shear strength prediction of corrosion-damaged reinforced concrete slender and non slender beamsCladera Bohigas, AntoniMarí Bernat, Antonio Ricardo|||0000-0002-0994-0715Ribas González, Carlos RodrigoReinforced concrete -- TestingReinforced concrete--Mechanical propertiesShear strengthReinforced concreteStirrupCorrosionDeteriorationMechanical modelSlender beamsShort beamsFormigó armat -- ProvesÀrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigóSteel corrosion in RC structures leads to a reduced reinforcement area, changes in steel mechanical properties, cracking and, eventually, concrete cover spalling, among other phenomena. Stirrups are generally small in diameter and, given their small concrete cover, they are more susceptible to corrosion than longitudinal reinforcement. Hence their corrosion significantly affects shear strength. Most existing models that deal with reduction in the shear strength of corrosion-damaged reinforced concrete (RC) structures are empirical; that is, they have been numerically fitted to test results. In this context, conceptual models based on structural mechanics principles and verified for corrosion-damaged members are still needed. In this paper, the Compression Chord Capacity Model (CCCM), a shear mechanical model previously derived by the authors, is adapted to predict the shear strength of corrosion-damaged RC beams. For this purpose, the model parameters that can be affected by steel corrosion in RC beams were identified and modified accordingly. CCCM predictions were compared to the experimental results of 146 slender and non slender beams failing in shear, in which stirrups and/or longitudinal reinforcement was subjected to corrosion. The CCCM achieved very satisfactory shear strength predictions when reductions in reinforcement areas and web width were taken into account, with a mean value of the Vtest/Vpred ratio equaling 1.19 and a 19.5% coefficient of variation. Finally, a parametric analysis was performed to show the predicted reductions in shear strength according to the CCCM compared to the experimental results of some especially relevant tests.The authors wish to acknowledge the financial support provided by the Spanish Ministry of Science, Innovation and Universities and European Funds for Regional Development (EU ERDF) through Research projects: RTI2018-099091-B-C22 (AEI/FEDER, UE) and RTI2018-097314-B-C21 (AEI/FEDER, UE).Peer ReviewedElsevier20212021-11-0120212021-11-09journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/355919https://dx.doi.org/10.1016/j.engstruct.2021.113163reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)InglésengAgencia Estatal de Investigación http://doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 RTI2018-097314-B-C21 ESTRUCTURAS DE HORMIGON DE ALTAS PRESTACIONES UTILIZANDO MATERIALES Y TECNOLOGIAS AVANZADOS DE DISEÑO Y CONSTRUCCIONopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttps://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3559192026-05-27T15:37:01Z
dc.title.none.fl_str_mv Mechanical model for the shear strength prediction of corrosion-damaged reinforced concrete slender and non slender beams
title Mechanical model for the shear strength prediction of corrosion-damaged reinforced concrete slender and non slender beams
spellingShingle Mechanical model for the shear strength prediction of corrosion-damaged reinforced concrete slender and non slender beams
Cladera Bohigas, Antoni
Reinforced concrete -- Testing
Reinforced concrete--Mechanical properties
Shear strength
Reinforced concrete
Stirrup
Corrosion
Deterioration
Mechanical model
Slender beams
Short beams
Formigó armat -- Proves
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
title_short Mechanical model for the shear strength prediction of corrosion-damaged reinforced concrete slender and non slender beams
title_full Mechanical model for the shear strength prediction of corrosion-damaged reinforced concrete slender and non slender beams
title_fullStr Mechanical model for the shear strength prediction of corrosion-damaged reinforced concrete slender and non slender beams
title_full_unstemmed Mechanical model for the shear strength prediction of corrosion-damaged reinforced concrete slender and non slender beams
title_sort Mechanical model for the shear strength prediction of corrosion-damaged reinforced concrete slender and non slender beams
dc.creator.none.fl_str_mv Cladera Bohigas, Antoni
Marí Bernat, Antonio Ricardo|||0000-0002-0994-0715
Ribas González, Carlos Rodrigo
author Cladera Bohigas, Antoni
author_facet Cladera Bohigas, Antoni
Marí Bernat, Antonio Ricardo|||0000-0002-0994-0715
Ribas González, Carlos Rodrigo
author_role author
author2 Marí Bernat, Antonio Ricardo|||0000-0002-0994-0715
Ribas González, Carlos Rodrigo
author2_role author
author
dc.subject.none.fl_str_mv Reinforced concrete -- Testing
Reinforced concrete--Mechanical properties
Shear strength
Reinforced concrete
Stirrup
Corrosion
Deterioration
Mechanical model
Slender beams
Short beams
Formigó armat -- Proves
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
topic Reinforced concrete -- Testing
Reinforced concrete--Mechanical properties
Shear strength
Reinforced concrete
Stirrup
Corrosion
Deterioration
Mechanical model
Slender beams
Short beams
Formigó armat -- Proves
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
description Steel corrosion in RC structures leads to a reduced reinforcement area, changes in steel mechanical properties, cracking and, eventually, concrete cover spalling, among other phenomena. Stirrups are generally small in diameter and, given their small concrete cover, they are more susceptible to corrosion than longitudinal reinforcement. Hence their corrosion significantly affects shear strength. Most existing models that deal with reduction in the shear strength of corrosion-damaged reinforced concrete (RC) structures are empirical; that is, they have been numerically fitted to test results. In this context, conceptual models based on structural mechanics principles and verified for corrosion-damaged members are still needed. In this paper, the Compression Chord Capacity Model (CCCM), a shear mechanical model previously derived by the authors, is adapted to predict the shear strength of corrosion-damaged RC beams. For this purpose, the model parameters that can be affected by steel corrosion in RC beams were identified and modified accordingly. CCCM predictions were compared to the experimental results of 146 slender and non slender beams failing in shear, in which stirrups and/or longitudinal reinforcement was subjected to corrosion. The CCCM achieved very satisfactory shear strength predictions when reductions in reinforcement areas and web width were taken into account, with a mean value of the Vtest/Vpred ratio equaling 1.19 and a 19.5% coefficient of variation. Finally, a parametric analysis was performed to show the predicted reductions in shear strength according to the CCCM compared to the experimental results of some especially relevant tests.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-11-01
2021
2021-11-09
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/355919
https://dx.doi.org/10.1016/j.engstruct.2021.113163
url https://hdl.handle.net/2117/355919
https://dx.doi.org/10.1016/j.engstruct.2021.113163
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación http://doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 RTI2018-097314-B-C21 ESTRUCTURAS DE HORMIGON DE ALTAS PRESTACIONES UTILIZANDO MATERIALES Y TECNOLOGIAS AVANZADOS DE DISEÑO Y CONSTRUCCION
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
https://creativecommons.org/licenses/by-nc-nd/4.0/
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:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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