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dc.contributor.authorSaleh, N.*
dc.contributor.authorAshour, Ashraf*
dc.contributor.authorLam, Dennis*
dc.contributor.authorSheehan, Therese*
dc.date.accessioned2019-01-25T12:32:36Z
dc.date.available2019-01-25T12:32:36Z
dc.date.issued2019-03-20
dc.identifier.citationSaleh N, Ashour AF, Lam D et al (2019) Experimental investigation of bond behaviour of two common GFRP bar types in high-strength concrete. Construction and Building Materials. 201: 610-622.en_US
dc.identifier.urihttp://hdl.handle.net/10454/16766
dc.descriptionYesen_US
dc.description.abstractAlthough several research studies have been conducted on investigating the bond stress – slip behaviour of Glass-Fibre Reinforced Polymer (GFRP) bars embedded in high strength concrete (HSC) using a pull-out method, there is no published work on the bond behaviour of GFRP bars embedded in high strength concrete using a hinged beam. This paper presents the experimental work consisted of testing 28 hinged beams prepared according to RILEM specifications. The investigation of bond performance of GFRP bars in HSC was carried out by analysing the effect of the following parameters: bar diameter (9.5, 12.7 and 15.9 mm), embedment length (5 and 10 times bar diameter), surface configuration (helical wrapping with slight sand coating (HW-SC) and sand coating (SC)) and bar location (top and bottom). Four hinged beams reinforced with 16 mm steel bar were also tested for comparison purposes. The majority of beam specimens failed by pull-out. Visual inspection of the test specimens showed that the bond failure of GFRP (HW-SC) bars usually occurred owing to the bar surface damage, while the bond failure of GFRP (SC) bars was caused due to the detachment of sand coating. The GFRP bars with helical wrapping and sand coated surface configurations showed different bond behaviour and it was found that the bond performance of the sand coated surface was better than that of the helically wrapped surface. Bond strength reduced as the embedment length and bar diameter increased. It was also observed that the bond strength for the bottom bars was higher than that of the top bars. The bond strength was compared against the prediction methods given in ACI-440.1R, CSA-S806 and CSA-S6 codes. All design guidelines underestimated the bond strength of both GFRP re-bars embedded in high strength concrete.en_US
dc.description.sponsorshipMinistry of Higher Education in Libya for funding.en_US
dc.language.isoenen_US
dc.rights© 2018 Elsevier Ltd. All rights reserved. Reproduced in accordance with the publisher's self-archiving policy. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.en_US
dc.subjectGFRP baren_US
dc.subjectHigh strength concreteen_US
dc.subjectHinged beamen_US
dc.subjectBond behaviour and design codeen_US
dc.titleExperimental investigation of bond behaviour of two common GFRP bar types in high-strength concreteen_US
dc.status.refereedYesen_US
dc.date.Accepted2018-12-24
dc.date.application2019-01-07
dc.typeArticleen_US
dc.type.versionAccepted Manuscripten_US
dc.identifier.doihttps://doi.org/10.1016/j.conbuildmat.2018.12.175
refterms.dateFOA2019-01-25T12:32:36Z


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