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Article: Improving flexural ductility of high-strength concrete beams

TitleImproving flexural ductility of high-strength concrete beams
Authors
KeywordsBeams & girders
Buildings, structure & design
Concrete structures
Issue Date2006
PublisherThomas Telford (ICE Publishing). The Journal's web site is located at http://www.structuresandbuildings.com
Citation
Proceedings Of The Institution Of Civil Engineers: Structures And Buildings, 2006, v. 159 n. 6, p. 339-347 How to Cite?
AbstractWith the advent of advanced mineral and chemical admixtures, the strength level of concrete has been raised dramatically and high-strength concrete (HSC) is becoming more and more commonly used. However, HSC is generally more brittle than normal strength concrete. In fact, it has been shown that the use of HSC, if not properly controlled, could significantly reduce the flexural ductility of reinforced concrete beams. Herein, it is proposed to compensate for the reduction in flexural ductility owing to the use of HSC by adding compression and confining reinforcements. A parametric study based on complete moment-curvature analysis of beam sections made of different grades of concrete and provided with different amounts of tension, compression and confining reinforcements has been carried out to evaluate the increases in flexural ductility achievable by adding compression and confining reinforcements. From the numerical results, the compression and/or confining reinforcements needed to maintain a consistent level of minimum flexural ductility at all concrete strength levels have been determined and correlated to the concrete strength for direct evaluation in the design of HSC beams.
Persistent Identifierhttp://hdl.handle.net/10722/71005
ISSN
2015 Impact Factor: 0.429
2015 SCImago Journal Rankings: 0.323
References

 

DC FieldValueLanguage
dc.contributor.authorKwan, AKHen_HK
dc.contributor.authorChau, SLen_HK
dc.contributor.authorAu, FTKen_HK
dc.date.accessioned2010-09-06T06:28:03Z-
dc.date.available2010-09-06T06:28:03Z-
dc.date.issued2006en_HK
dc.identifier.citationProceedings Of The Institution Of Civil Engineers: Structures And Buildings, 2006, v. 159 n. 6, p. 339-347en_HK
dc.identifier.issn0965-0911en_HK
dc.identifier.urihttp://hdl.handle.net/10722/71005-
dc.description.abstractWith the advent of advanced mineral and chemical admixtures, the strength level of concrete has been raised dramatically and high-strength concrete (HSC) is becoming more and more commonly used. However, HSC is generally more brittle than normal strength concrete. In fact, it has been shown that the use of HSC, if not properly controlled, could significantly reduce the flexural ductility of reinforced concrete beams. Herein, it is proposed to compensate for the reduction in flexural ductility owing to the use of HSC by adding compression and confining reinforcements. A parametric study based on complete moment-curvature analysis of beam sections made of different grades of concrete and provided with different amounts of tension, compression and confining reinforcements has been carried out to evaluate the increases in flexural ductility achievable by adding compression and confining reinforcements. From the numerical results, the compression and/or confining reinforcements needed to maintain a consistent level of minimum flexural ductility at all concrete strength levels have been determined and correlated to the concrete strength for direct evaluation in the design of HSC beams.en_HK
dc.languageengen_HK
dc.publisherThomas Telford (ICE Publishing). The Journal's web site is located at http://www.structuresandbuildings.comen_HK
dc.relation.ispartofProceedings of the Institution of Civil Engineers: Structures and Buildingsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsPermission is granted by ICE Publishing to print one copy for personal use. Any other use of these PDF files is subject to reprint fees-
dc.subjectBeams & girdersen_HK
dc.subjectBuildings, structure & designen_HK
dc.subjectConcrete structuresen_HK
dc.titleImproving flexural ductility of high-strength concrete beamsen_HK
dc.typeArticleen_HK
dc.identifier.emailKwan, AKH:khkwan@hkucc.hku.hken_HK
dc.identifier.emailAu, FTK:francis.au@hku.hken_HK
dc.identifier.authorityKwan, AKH=rp00127en_HK
dc.identifier.authorityAu, FTK=rp00083en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1680/stbu.2006.159.6.339en_HK
dc.identifier.scopuseid_2-s2.0-33845201803en_HK
dc.identifier.hkuros132114en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33845201803&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume159en_HK
dc.identifier.issue6en_HK
dc.identifier.spage339en_HK
dc.identifier.epage347en_HK
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridKwan, AKH=7101738204en_HK
dc.identifier.scopusauthoridChau, SL=7005551028en_HK
dc.identifier.scopusauthoridAu, FTK=7005204072en_HK

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