Experimental study of bond-slip of GFRP bars in concrete under sustained loads

The structural behaviour of reinforced concrete (RC) elements depends heavily on the bond performance between the concrete and the reinforcing material. Bond behaviour under short-term testing has been extensively analysed for steel reinforcement and many studies have been carried out for fibre rein...

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Autores: Vilanova Marco, Irene, Baena Muñoz, Marta, Torres Llinàs, Lluís, Barris Peña, Cristina
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2015
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositório:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10256/11954
Acesso em linha:http://hdl.handle.net/10256/11954
Access Level:Acesso embargado
Palavra-chave:Assaigs de materials
Materials -- Testing
Formigó armat -- Proves
Reinforced concrete -- Testing
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spelling Experimental study of bond-slip of GFRP bars in concrete under sustained loadsVilanova Marco, IreneBaena Muñoz, MartaTorres Llinàs, LluísBarris Peña, CristinaAssaigs de materialsMaterials -- TestingFormigó armat -- ProvesReinforced concrete -- TestingThe structural behaviour of reinforced concrete (RC) elements depends heavily on the bond performance between the concrete and the reinforcing material. Bond behaviour under short-term testing has been extensively analysed for steel reinforcement and many studies have been carried out for fibre reinforced polymer (FRP) reinforcement. However, there has only been limited investigation of the long-term effects of this interaction. Several factors can affect the long-term bond behaviour of these elements, the most important being bond length and the immediate and time-dependent properties of reinforcement and concrete (concrete grade, creep, shrinkage and stiffness). This time-dependent behaviour is likely to cause changes and redistributions in bond stresses not properly considered in the limited existing literature. In this experimental study, the bond performance of GFRP RC under sustained load is investigated through pull-out tests. A total of 12 pull-out specimens were tested for a period of between 90 and 130 days. Two concrete strengths (35 MPa and 50 MPa), two bond lengths (5 and 10 times the diameter of the reinforcing bar) and two reinforcing materials (glass fibre reinforced polymer (GFRP) and steel) were used. Experimental results regarding immediate and time-dependent slip are presented and analysed here. In addition, some specimens were instrumented, with internal strain gauges in the reinforcing bar to provide data on the reinforcement strain, thus allowing the distribution of bond stresses and their evolution during sustained loading to be also presented and analysedhe authors acknowledge the support provided by the Spanish Government (Ministerio de Ciencia y Innovacion), Project BIA2010-20234-C03-02, and also the support of Schok Bauteile GmbH for the supply of GFRP barsElsevierMinisterio de Ciencia e Innovación (Espanya)infoinfo2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10256/11954http://hdl.handle.net/10256/11954© Composites. Part B, Engineering, 2015, vol. 74, p. 42-52Articles publicats (D-EMCI)reponame: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.compositesb.2015.01.006info:eu-repo/semantics/altIdentifier/issn/1359-8368info:eu-repo/grantAgreement/MICINN//BIA2010-20234-C03-02Tots els drets reservatsinfo:eu-repo/semantics/embargoedAccessoai:recercat.cat:10256/119542026-05-29T05:05:01Z
dc.title.none.fl_str_mv Experimental study of bond-slip of GFRP bars in concrete under sustained loads
title Experimental study of bond-slip of GFRP bars in concrete under sustained loads
spellingShingle Experimental study of bond-slip of GFRP bars in concrete under sustained loads
Vilanova Marco, Irene
Assaigs de materials
Materials -- Testing
Formigó armat -- Proves
Reinforced concrete -- Testing
title_short Experimental study of bond-slip of GFRP bars in concrete under sustained loads
title_full Experimental study of bond-slip of GFRP bars in concrete under sustained loads
title_fullStr Experimental study of bond-slip of GFRP bars in concrete under sustained loads
title_full_unstemmed Experimental study of bond-slip of GFRP bars in concrete under sustained loads
title_sort Experimental study of bond-slip of GFRP bars in concrete under sustained loads
dc.creator.none.fl_str_mv Vilanova Marco, Irene
Baena Muñoz, Marta
Torres Llinàs, Lluís
Barris Peña, Cristina
author Vilanova Marco, Irene
author_facet Vilanova Marco, Irene
Baena Muñoz, Marta
Torres Llinàs, Lluís
Barris Peña, Cristina
author_role author
author2 Baena Muñoz, Marta
Torres Llinàs, Lluís
Barris Peña, Cristina
author2_role author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (Espanya)
dc.subject.none.fl_str_mv Assaigs de materials
Materials -- Testing
Formigó armat -- Proves
Reinforced concrete -- Testing
topic Assaigs de materials
Materials -- Testing
Formigó armat -- Proves
Reinforced concrete -- Testing
description The structural behaviour of reinforced concrete (RC) elements depends heavily on the bond performance between the concrete and the reinforcing material. Bond behaviour under short-term testing has been extensively analysed for steel reinforcement and many studies have been carried out for fibre reinforced polymer (FRP) reinforcement. However, there has only been limited investigation of the long-term effects of this interaction. Several factors can affect the long-term bond behaviour of these elements, the most important being bond length and the immediate and time-dependent properties of reinforcement and concrete (concrete grade, creep, shrinkage and stiffness). This time-dependent behaviour is likely to cause changes and redistributions in bond stresses not properly considered in the limited existing literature. In this experimental study, the bond performance of GFRP RC under sustained load is investigated through pull-out tests. A total of 12 pull-out specimens were tested for a period of between 90 and 130 days. Two concrete strengths (35 MPa and 50 MPa), two bond lengths (5 and 10 times the diameter of the reinforcing bar) and two reinforcing materials (glass fibre reinforced polymer (GFRP) and steel) were used. Experimental results regarding immediate and time-dependent slip are presented and analysed here. In addition, some specimens were instrumented, with internal strain gauges in the reinforcing bar to provide data on the reinforcement strain, thus allowing the distribution of bond stresses and their evolution during sustained loading to be also presented and analysed
publishDate 2015
dc.date.none.fl_str_mv 2015
info
info
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10256/11954
http://hdl.handle.net/10256/11954
url http://hdl.handle.net/10256/11954
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.compositesb.2015.01.006
info:eu-repo/semantics/altIdentifier/issn/1359-8368
info:eu-repo/grantAgreement/MICINN//BIA2010-20234-C03-02
dc.rights.none.fl_str_mv Tots els drets reservats
info:eu-repo/semantics/embargoedAccess
rights_invalid_str_mv Tots els drets reservats
eu_rights_str_mv embargoedAccess
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 © Composites. Part B, Engineering, 2015, vol. 74, p. 42-52
Articles publicats (D-EMCI)
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 15.198674

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