Conference Paper: Response of concrete beams partially prestressed with external unbonded carbon fiber-reinforced polymer tendons

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TitleResponse of concrete beams partially prestressed with external unbonded carbon fiber-reinforced polymer tendons
AuthorsDu, J3
Yang, D
Ng, PL1
Au, FTK2
KeywordsBeams
Carbon fiber-reinforced polymer
External tendon
Prestressed concrete
Issue Date2011
PublisherTrans Tech Publications Ltd.. The Journal's web site is located at http://www.scitec.ch/1022-6680/
CitationAdvanced Materials Research, 2011, v. 150-151, p. 344-349 [How to Cite?]
DOI: http://dx.doi.org/10.4028/www.scientific.net/AMR.150-151.344
AbstractTo assess the behavior of concrete beams partially prestressed with external unbonded carbon fiber-reinforced polymer (CFRP) tendons, three specimens prestressed with CFRP tendons and one reference specimen prestressed with external steel tendons were tested to failure under third point loading. It was found that the load-deflection curve of all specimens exhibited three stages, namely, elastic, cracked-elastic and plastic. The transition from the elastic to the cracked-elastic stage was caused by the development of cracks at the bottom of the beam, while the transition from the cracked-elastic to the plastic stage was caused by yielding of the non-prestressed steel. For beams prestressed with external CFRP tendons and that with external steel tendons, the relationships between the stress increment in external tendons and the mid-span deflection of specimens were linear or approximately linear. Although CFRP materials are brittle in nature and behave linearly elastically until failure, proper combination of external CFRP prestress tendons with internal steel reinforcing bars can impart ductility to the beams. © (2011) Trans Tech Publications.
DescriptionSelected, peer reviewed paper from the 2010 International Conference on Advances in Materials and Manufacturing Processes (ICAMMP 2010), 6-8 November, 2010, Shenzhen, China
ISSN1022-6680
2011 SCImago Journal Rankings: 0.030
DOIhttp://dx.doi.org/10.4028/www.scientific.net/AMR.150-151.344
ISI Accession Number IDWOS:000289913000069
ReferencesReferences in Scopus
DC Field
Value
dc.contributor.authorDu, J
dc.contributor.authorYang, D
dc.contributor.authorNg, PL
dc.contributor.authorAu, FTK
dc.date.accessioned2011-09-23T05:44:38Z
dc.date.available2011-09-23T05:44:38Z
dc.date.issued2011
dc.description.abstractTo assess the behavior of concrete beams partially prestressed with external unbonded carbon fiber-reinforced polymer (CFRP) tendons, three specimens prestressed with CFRP tendons and one reference specimen prestressed with external steel tendons were tested to failure under third point loading. It was found that the load-deflection curve of all specimens exhibited three stages, namely, elastic, cracked-elastic and plastic. The transition from the elastic to the cracked-elastic stage was caused by the development of cracks at the bottom of the beam, while the transition from the cracked-elastic to the plastic stage was caused by yielding of the non-prestressed steel. For beams prestressed with external CFRP tendons and that with external steel tendons, the relationships between the stress increment in external tendons and the mid-span deflection of specimens were linear or approximately linear. Although CFRP materials are brittle in nature and behave linearly elastically until failure, proper combination of external CFRP prestress tendons with internal steel reinforcing bars can impart ductility to the beams. © (2011) Trans Tech Publications.
dc.description.natureLink_to_subscribed_fulltext
dc.descriptionSelected, peer reviewed paper from the 2010 International Conference on Advances in Materials and Manufacturing Processes (ICAMMP 2010), 6-8 November, 2010, Shenzhen, China
dc.identifier.citationAdvanced Materials Research, 2011, v. 150-151, p. 344-349 [How to Cite?]
DOI: http://dx.doi.org/10.4028/www.scientific.net/AMR.150-151.344
dc.identifier.doihttp://dx.doi.org/10.4028/www.scientific.net/AMR.150-151.344
dc.identifier.epage349
dc.identifier.hkuros193138
dc.identifier.isiWOS:000289913000069
dc.identifier.issn1022-6680
2011 SCImago Journal Rankings: 0.030
dc.identifier.openurl
dc.identifier.scopuseid_2-s2.0-78650633712
dc.identifier.spage344
dc.identifier.urihttp://hdl.handle.net/10722/139055
dc.identifier.volume150-151
dc.languageeng
dc.publisherTrans Tech Publications Ltd.. The Journal's web site is located at http://www.scitec.ch/1022-6680/
dc.publisher.placeSwitzerland
dc.relation.ispartofAdvanced Materials Research
dc.relation.referencesReferences in Scopus
dc.subjectBeams
dc.subjectCarbon fiber-reinforced polymer
dc.subjectExternal tendon
dc.subjectPrestressed concrete
dc.titleResponse of concrete beams partially prestressed with external unbonded carbon fiber-reinforced polymer tendons
dc.typeConference_Paper
Author Affiliations
  1. Dragages Hong Kong Ltd.
  2. The University of Hong Kong
  3. Beijing Jiaotong Daxue