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Article: FRP-strengthened RC slabs anchored with FRP anchors
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TitleFRP-strengthened RC slabs anchored with FRP anchors
 
AuthorsSmith, ST1
Hu, S1
Kim, SJ1
Seracino, R2
 
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
 
CitationEngineering Structures, 2011, v. 33 n. 4, p. 1075-1087 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.engstruct.2010.11.018
 
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.
 
ISSN0141-0296
2013 Impact Factor: 1.767
2013 SCImago Journal Rankings: 2.205
 
DOIhttp://dx.doi.org/10.1016/j.engstruct.2010.11.018
 
ISI Accession Number IDWOS:000289026900001
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.

 
ReferencesReferences in Scopus
 
GrantsStrengthening of Reinforced Concrete Slabs with Large Penetrations using Fibre-Reinforced Polymer (FRP) Composites
 
DC FieldValue
dc.contributor.authorSmith, ST
 
dc.contributor.authorHu, S
 
dc.contributor.authorKim, SJ
 
dc.contributor.authorSeracino, R
 
dc.date.accessioned2011-09-23T05:44:48Z
 
dc.date.available2011-09-23T05:44:48Z
 
dc.date.issued2011
 
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.
 
dc.description.naturelink_to_subscribed_fulltext
 
dc.identifier.citationEngineering Structures, 2011, v. 33 n. 4, p. 1075-1087 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.engstruct.2010.11.018
 
dc.identifier.citeulike8793635
 
dc.identifier.doihttp://dx.doi.org/10.1016/j.engstruct.2010.11.018
 
dc.identifier.eissn1873-7323
 
dc.identifier.epage1087
 
dc.identifier.hkuros194988
 
dc.identifier.isiWOS:000289026900001
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.

 
dc.identifier.issn0141-0296
2013 Impact Factor: 1.767
2013 SCImago Journal Rankings: 2.205
 
dc.identifier.issue4
 
dc.identifier.openurl
 
dc.identifier.scopuseid_2-s2.0-79951953810
 
dc.identifier.spage1075
 
dc.identifier.urihttp://hdl.handle.net/10722/139076
 
dc.identifier.volume33
 
dc.languageeng
 
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/engstruct
 
dc.publisher.placeUnited Kingdom
 
dc.relation.ispartofEngineering Structures
 
dc.relation.projectStrengthening of Reinforced Concrete Slabs with Large Penetrations using Fibre-Reinforced Polymer (FRP) Composites
 
dc.relation.referencesReferences in Scopus
 
dc.subjectDebonding
 
dc.subjectDeformability
 
dc.subjectFibre-reinforced polymer composites
 
dc.subjectFlexural strengthening
 
dc.subjectFRP anchors
 
dc.subjectSlabs
 
dc.titleFRP-strengthened RC slabs anchored with FRP anchors
 
dc.typeArticle
 
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Author Affiliations
  1. The University of Hong Kong
  2. North Carolina State University