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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
2013 SCImago Journal Rankings: 0.144
 
DOIhttp://dx.doi.org/10.4028/www.scientific.net/AMR.150-151.344
 
ISI Accession Number IDWOS:000289913000069
 
ReferencesReferences in Scopus
 
DC FieldValue
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
2013 SCImago Journal Rankings: 0.144
 
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
 
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Author Affiliations
  1. Dragages Hong Kong Ltd.
  2. The University of Hong Kong
  3. Beijing Jiaotong Daxue