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Article: FRP-strengthened RC slabs anchored with FRP anchors

TitleFRP-strengthened RC slabs anchored with FRP anchors
Authors
KeywordsDebonding
Deformability
Fibre-reinforced polymer composites
Flexural strengthening
FRP anchors
Slabs
Issue Date2011
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/engstruct
Citation
Engineering Structures, 2011, v. 33 n. 4, p. 1075-1087 How to Cite?
AbstractAn abundance of tests over the last two decades has shown the bending capacity of flexural members such as reinforced concrete (RC) beams and slabs to be enhanced by the bonding of fibre-reinforced polymer (FRP) composites to their tension face. The propensity of the FRP to debond, however, limits its effectiveness. Different types of anchorages have therefore been investigated in order to delay or even prevent debonding. The so-called FRP anchor, which is made from rolled fibre sheets or bundles of lose fibres, is particularly suitable for anchoring FRP composites to a variety of structural element shapes. Studies that assess the effectiveness of FRP anchors in anchoring FRP strengthening in flexural members is, however, limited. This paper in turn reports a series of tests on one-way spanning simply supported RC slabs which have been strengthened in flexure with tension face bonded FRP composites and anchored with different arrangements of FRP anchors. The load-deflection responses of all slab tests are plotted, in addition to selected strain results. The behaviours of the specimens including the failure modes are also discussed. The greatest enhancement in load and deflection experienced by the six slabs strengthened with FRP plates and anchored with FRP anchors was 30% and 110%, respectively, over the unanchored FRP-strengthened control slab. The paper also discusses the strategic placement of FRP anchors for optimal strength and deflection enhancement in FRP-strengthened RC slabs. © 2010 Elsevier Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/139076
ISSN
2015 Impact Factor: 1.893
2015 SCImago Journal Rankings: 1.813
ISI Accession Number ID
Funding AgencyGrant Number
Hong Kong Research Grants CouncilHKU 716308E
Funding Information:

Funding provided by the Hong Kong Research Grants Council in the form of General Research Fund Grant HKU 716308E is gratefully acknowledged. The following individuals from The University of Hong Kong are thanked for their assistance with the experimental work: Messers Huawen Zhang (Ph.D. candidate), Jiaqi Yang (M.Phil. candidate), Kin Lung Jason Li (2009-10 undergraduate final year project student), and the LG laboratory technicians. In addition, Mr. Jacob Schmidt (Ph.D. candidate) of the Technical University of Denmark is thanked for his assistance with the experimental work and also for producing the three-dimensional drawings.

References
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DC FieldValueLanguage
dc.contributor.authorSmith, STen_HK
dc.contributor.authorHu, Sen_HK
dc.contributor.authorKim, SJen_HK
dc.contributor.authorSeracino, Ren_HK
dc.date.accessioned2011-09-23T05:44:48Z-
dc.date.available2011-09-23T05:44:48Z-
dc.date.issued2011en_HK
dc.identifier.citationEngineering Structures, 2011, v. 33 n. 4, p. 1075-1087en_HK
dc.identifier.issn0141-0296en_HK
dc.identifier.urihttp://hdl.handle.net/10722/139076-
dc.description.abstractAn abundance of tests over the last two decades has shown the bending capacity of flexural members such as reinforced concrete (RC) beams and slabs to be enhanced by the bonding of fibre-reinforced polymer (FRP) composites to their tension face. The propensity of the FRP to debond, however, limits its effectiveness. Different types of anchorages have therefore been investigated in order to delay or even prevent debonding. The so-called FRP anchor, which is made from rolled fibre sheets or bundles of lose fibres, is particularly suitable for anchoring FRP composites to a variety of structural element shapes. Studies that assess the effectiveness of FRP anchors in anchoring FRP strengthening in flexural members is, however, limited. This paper in turn reports a series of tests on one-way spanning simply supported RC slabs which have been strengthened in flexure with tension face bonded FRP composites and anchored with different arrangements of FRP anchors. The load-deflection responses of all slab tests are plotted, in addition to selected strain results. The behaviours of the specimens including the failure modes are also discussed. The greatest enhancement in load and deflection experienced by the six slabs strengthened with FRP plates and anchored with FRP anchors was 30% and 110%, respectively, over the unanchored FRP-strengthened control slab. The paper also discusses the strategic placement of FRP anchors for optimal strength and deflection enhancement in FRP-strengthened RC slabs. © 2010 Elsevier Ltd.en_HK
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/engstructen_HK
dc.relation.ispartofEngineering Structuresen_HK
dc.subjectDebondingen_HK
dc.subjectDeformabilityen_HK
dc.subjectFibre-reinforced polymer compositesen_HK
dc.subjectFlexural strengtheningen_HK
dc.subjectFRP anchorsen_HK
dc.subjectSlabsen_HK
dc.titleFRP-strengthened RC slabs anchored with FRP anchorsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0141-0296&volume=33&issue=4&spage=1075&epage=1087&date=2011&atitle=FRP-strengthened+RC+slabs+anchored+with+FRP+anchorsen_US
dc.identifier.emailSmith, ST:stsmith@hku.hken_HK
dc.identifier.authoritySmith, ST=rp00168en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.engstruct.2010.11.018en_HK
dc.identifier.scopuseid_2-s2.0-79951953810en_HK
dc.identifier.hkuros194988en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79951953810&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume33en_HK
dc.identifier.issue4en_HK
dc.identifier.spage1075en_HK
dc.identifier.epage1087en_HK
dc.identifier.eissn1873-7323-
dc.identifier.isiWOS:000289026900001-
dc.publisher.placeUnited Kingdomen_HK
dc.relation.projectStrengthening of Reinforced Concrete Slabs with Large Penetrations using Fibre-Reinforced Polymer (FRP) Composites-
dc.identifier.scopusauthoridSmith, ST=8751691000en_HK
dc.identifier.scopusauthoridHu, S=37021365500en_HK
dc.identifier.scopusauthoridKim, SJ=36237633000en_HK
dc.identifier.scopusauthoridSeracino, R=6602224806en_HK
dc.identifier.citeulike8793635-

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