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- Publisher Website: 10.1016/j.conbuildmat.2008.06.005
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Article: Strengthening of one-way spanning RC slabs with cutouts using FRP composites
Title | Strengthening of one-way spanning RC slabs with cutouts using FRP composites | ||||
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Authors | |||||
Keywords | Bonding Cutouts FRP Line loads Openings Penetrations Reinforced concrete Slabs Strengthening | ||||
Issue Date | 2009 | ||||
Publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/conbuildmat | ||||
Citation | Construction And Building Materials, 2009, v. 23 n. 4, p. 1578-1590 How to Cite? | ||||
Abstract | This paper reports the results of tests on fibre reinforced polymer (FRP) strengthened one-way spanning reinforced concrete (RC) slabs with central cutouts. Four wide slabs with cutouts were tested in addition to two narrow slabs without cutouts. Different positions of applied line loads for the slabs with cutouts resulted in different slab bending action and hence different FRP behaviour for the strengthened slabs. All FRP-strengthened slabs achieved a higher load-carrying capacity than their unstrengthened control counterparts. In addition, all strengthened slabs failed by debonding initiating at intermediate cracks (IC debonding) and in the case of the slabs with cutouts, the critical cracks were diagonal and originated from the corners of the cutout. The ability of the FRP to redistribute stresses around the cutout, the failure mechanisms, as well as pre- and post-debonding behaviour of the strengthened slabs was therefore assessed for different load application positions. Strains on the FRP, concrete and internal steel reinforcement, as well as deflections at different positions on the slab surfaces are also reported. An analytical model, which is based on the ultimate moment of resistance about critical crack lines, is also reported and it its predictions are found to correlate well with the experimental results. The analytical model is able to capture the different slab bending actions in addition to the debonding failure of the strengthened slabs. © 2008 Elsevier Ltd. All rights reserved. | ||||
Persistent Identifier | http://hdl.handle.net/10722/58496 | ||||
ISSN | 2023 Impact Factor: 7.4 2023 SCImago Journal Rankings: 1.999 | ||||
ISI Accession Number ID |
Funding Information: The support of the University of Technology Sydney (UTS), through a Research Excellence Grant awarded to the first author of this paper while he was employed by UTS, is gratefully acknowledged. The authors wish to thank Degussa (Aust) Pty Ltd and also Dr. Ameli and Messrs Shrestha, Kaul, Otoom and Vo for assisting with the experiments. | ||||
References |
DC Field | Value | Language |
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dc.contributor.author | Smith, ST | en_HK |
dc.contributor.author | Kim, SJ | en_HK |
dc.date.accessioned | 2010-05-31T03:31:27Z | - |
dc.date.available | 2010-05-31T03:31:27Z | - |
dc.date.issued | 2009 | en_HK |
dc.identifier.citation | Construction And Building Materials, 2009, v. 23 n. 4, p. 1578-1590 | en_HK |
dc.identifier.issn | 0950-0618 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/58496 | - |
dc.description.abstract | This paper reports the results of tests on fibre reinforced polymer (FRP) strengthened one-way spanning reinforced concrete (RC) slabs with central cutouts. Four wide slabs with cutouts were tested in addition to two narrow slabs without cutouts. Different positions of applied line loads for the slabs with cutouts resulted in different slab bending action and hence different FRP behaviour for the strengthened slabs. All FRP-strengthened slabs achieved a higher load-carrying capacity than their unstrengthened control counterparts. In addition, all strengthened slabs failed by debonding initiating at intermediate cracks (IC debonding) and in the case of the slabs with cutouts, the critical cracks were diagonal and originated from the corners of the cutout. The ability of the FRP to redistribute stresses around the cutout, the failure mechanisms, as well as pre- and post-debonding behaviour of the strengthened slabs was therefore assessed for different load application positions. Strains on the FRP, concrete and internal steel reinforcement, as well as deflections at different positions on the slab surfaces are also reported. An analytical model, which is based on the ultimate moment of resistance about critical crack lines, is also reported and it its predictions are found to correlate well with the experimental results. The analytical model is able to capture the different slab bending actions in addition to the debonding failure of the strengthened slabs. © 2008 Elsevier Ltd. All rights reserved. | en_HK |
dc.language | eng | en_HK |
dc.publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/conbuildmat | en_HK |
dc.relation.ispartof | Construction and Building Materials | en_HK |
dc.rights | Construction and Building Materials. Copyright © Elsevier BV. | en_HK |
dc.subject | Bonding | en_HK |
dc.subject | Cutouts | en_HK |
dc.subject | FRP | en_HK |
dc.subject | Line loads | en_HK |
dc.subject | Openings | en_HK |
dc.subject | Penetrations | en_HK |
dc.subject | Reinforced concrete | en_HK |
dc.subject | Slabs | en_HK |
dc.subject | Strengthening | en_HK |
dc.title | Strengthening of one-way spanning RC slabs with cutouts using FRP composites | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0950-0618&volume=23&issue=4&spage=1578&epage=1590&date=2009&atitle=Strengthening+of+one-way+spanning+RC+slabs+with+cutouts+using+FRP+composites | en_HK |
dc.identifier.email | Smith, ST:stsmith@hku.hk | en_HK |
dc.identifier.authority | Smith, ST=rp00168 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.conbuildmat.2008.06.005 | en_HK |
dc.identifier.scopus | eid_2-s2.0-59049103576 | en_HK |
dc.identifier.hkuros | 163399 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-59049103576&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 23 | en_HK |
dc.identifier.issue | 4 | en_HK |
dc.identifier.spage | 1578 | en_HK |
dc.identifier.epage | 1590 | en_HK |
dc.identifier.isi | WOS:000264000000011 | - |
dc.publisher.place | Netherlands | en_HK |
dc.identifier.scopusauthorid | Smith, ST=8751691000 | en_HK |
dc.identifier.scopusauthorid | Kim, SJ=24833490500 | en_HK |
dc.identifier.issnl | 0950-0618 | - |