Item


Experimental study of the influence of adhesive properties and bond length on the bond behaviour of NSM FRP bars in concrete

The near-surface mounted (NSM) fibre reinforced polymer (FRP) technique is a relatively recent system for strengthening concrete structures. Bond is a key factor in its behaviour, and is affected by many factors whose influence can only be tested through experimental studies. In this study, the modified pull-out test was used to study the effect of epoxy properties and bond length on the behaviour of NSM FRP bars. Three epoxy types, two FRP materials (carbon and glass) and four bond lengths (6db, 12db, 24db and 30db) are used. The load capacity, slips at the loaded end and free end and average bond stress are all analysed. The test results indicate that the role of epoxy properties appear to be a key factor in bond performance in the NSM FRP strengthening technique, and that their effect varies depending on bond length and FRP properties

The authors acknowledge the support provided by the Spanish Government (Ministerio de Ciencia e Innovación), Project ref. BIA2010-20234-C03-02. The first author also acknowledges support from the Generalitat de Catalunya for an FI predoctoral grant, ref. 2011FI_B 00003

© Journal of Civil Engineering and Management, 2016, vol. 22, núm. 6, p. 808-817

Taylor and Francis

Author: Barris Peña, Cristina
Baena Muñoz, Marta
Torres Llinàs, Lluís
Sharaky, Ibrahim Attia
Date: 2016 August 17
Abstract: The near-surface mounted (NSM) fibre reinforced polymer (FRP) technique is a relatively recent system for strengthening concrete structures. Bond is a key factor in its behaviour, and is affected by many factors whose influence can only be tested through experimental studies. In this study, the modified pull-out test was used to study the effect of epoxy properties and bond length on the behaviour of NSM FRP bars. Three epoxy types, two FRP materials (carbon and glass) and four bond lengths (6db, 12db, 24db and 30db) are used. The load capacity, slips at the loaded end and free end and average bond stress are all analysed. The test results indicate that the role of epoxy properties appear to be a key factor in bond performance in the NSM FRP strengthening technique, and that their effect varies depending on bond length and FRP properties
The authors acknowledge the support provided by the Spanish Government (Ministerio de Ciencia e Innovación), Project ref. BIA2010-20234-C03-02. The first author also acknowledges support from the Generalitat de Catalunya for an FI predoctoral grant, ref. 2011FI_B 00003
Format: application/pdf
ISSN: 1392-3730 (versió paper)
1822-3605 (versió electrònica)
Document access: http://hdl.handle.net/10256/13675
Language: eng
Publisher: Taylor and Francis
Collection: MICINN/PN 2011-2013/BIA2010-20234-C03-02
Reproducció digital del document publicat a: http://dx.doi.org/10.3846/13923730.2014.914097
Articles publicats (D-EMCI)
Is part of: © Journal of Civil Engineering and Management, 2016, vol. 22, núm. 6, p. 808-817
Rights: Tots els drets reservats
Subject: Assaigs de materials
Materials -- Testing
Formigó armat -- Proves
Reinforced concrete -- Testing
Resistència de materials
Strength of materials
Adhesius
Adhesives
Title: Experimental study of the influence of adhesive properties and bond length on the bond behaviour of NSM FRP bars in concrete
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

Subjects

Authors