Low-grade glued laminated timber beams reinforced using improved arrangements of bonded-in GFRP rods

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dc.contributor.author Raftery, Gary en
dc.contributor.author Whelan, C en
dc.date.accessioned 2014-02-10T20:55:12Z en
dc.date.issued 2014-02-15 en
dc.identifier.citation Construction and Building Materials 52:209-220 15 Feb 2014 en
dc.identifier.issn 0950-0618 en
dc.identifier.uri http://hdl.handle.net/2292/21581 en
dc.description.abstract This paper describes an experimental test programme which examines the strengthening in flexure of low-grade glued laminated timber beams (glulam) using bonded-in glass fibre reinforced polymer (GFRP) rods. Reinforcement configurations and arrangements previously not studied in the literature are reported on. The performance of unreinforced glulam beams, strengthened glulam beams using varying groove arrangements and different GFRP sized rods with single and double reinforcement was examined. The test results indicate that the geometrical arrangement of the routed out grooves is important and enhancements in the mechanical performance of the reinforced beams can be improved by reducing the effects of stress concentrations. The use of a number of smaller diameter rods per groove to increase the bond surface area proved to be of no advantage when reinforcing the beams. The unreinforced low-grade glulam exhibited linear elastic behaviour with brittle tensile failures in comparison to the nonlinear behaviour of the beams strengthened on their tensile face. Using a reasonable reinforcement percentage of 1.4% in the tension zone with circular routed grooves, mean stiffness enhancements of 11.2% and 13.9% for the global and local measurements were achieved respectively and a mean improvement in the ultimate moment capacity of 68% was achieved in comparison to the unreinforced glulam beams. en
dc.relation.ispartofseries Construction and Building Materials en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from http://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy#published-journal-article http://www.sherpa.ac.uk/romeo/issn/0950-0618/ en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title Low-grade glued laminated timber beams reinforced using improved arrangements of bonded-in GFRP rods en
dc.type Journal Article en
dc.identifier.doi 10.1016/j.conbuildmat.2013.11.044 en
pubs.begin-page 209 en
pubs.volume 52 en
pubs.end-page 220 en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Article en
pubs.elements-id 422447 en
pubs.org-id Engineering en
pubs.org-id Civil and Environmental Eng en
pubs.record-created-at-source-date 2014-02-11 en

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