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Article: Shrinkage movement analysis of reinforced concrete floors constructed in stages

TitleShrinkage movement analysis of reinforced concrete floors constructed in stages
Authors
KeywordsConcrete floor
Construction control
Creep
Finite element
Shrinkage
Issue Date2009
PublisherTechno-Press. The Journal's web site is located at http://technopress.kaist.ac.kr/?journal=cac&subpage=6
Citation
Computers And Concrete, 2009, v. 6 n. 2, p. 167-185 How to Cite?
AbstractReinforced concrete floors constructed between movement restraints often crack seriously due to shrinkage after completion. One common mitigation measure is to construct the concrete floors in stages to allow part of the shrinkage movement to take place before completion. However, shrinkage movement analysis of concrete floors constructed in stages is quite cumbersome, as the structural configuration changes during construction, thus necessitating reanalysis of the partially completed structure at each stage. Herein, a finite element method for shrinkage movement analysis of concrete floors constructed in stages is developed. It analyses the whole structure, including the completed and uncompleted portions, at all stages. The same mesh is used all the time and therefore re-meshing and location matching are no longer necessary. This is achieved by giving negligibly small stiffness to the uncompleted portions, which in reality do not exist yet. In the analysis, the locked-in strains due to increase in elastic modulus as the concrete hardens and the creep of the hardened concrete are taken into account. Most important of all, this method would enable fully automatic shrinkage movement analysis for the purpose of construction control.
Persistent Identifierhttp://hdl.handle.net/10722/124572
ISSN
2015 Impact Factor: 0.849
2015 SCImago Journal Rankings: 0.506
References

 

DC FieldValueLanguage
dc.contributor.authorKwan, AKHen_HK
dc.contributor.authorNg, PLen_HK
dc.date.accessioned2010-10-31T10:42:00Z-
dc.date.available2010-10-31T10:42:00Z-
dc.date.issued2009en_HK
dc.identifier.citationComputers And Concrete, 2009, v. 6 n. 2, p. 167-185en_HK
dc.identifier.issn1598-8198en_HK
dc.identifier.urihttp://hdl.handle.net/10722/124572-
dc.description.abstractReinforced concrete floors constructed between movement restraints often crack seriously due to shrinkage after completion. One common mitigation measure is to construct the concrete floors in stages to allow part of the shrinkage movement to take place before completion. However, shrinkage movement analysis of concrete floors constructed in stages is quite cumbersome, as the structural configuration changes during construction, thus necessitating reanalysis of the partially completed structure at each stage. Herein, a finite element method for shrinkage movement analysis of concrete floors constructed in stages is developed. It analyses the whole structure, including the completed and uncompleted portions, at all stages. The same mesh is used all the time and therefore re-meshing and location matching are no longer necessary. This is achieved by giving negligibly small stiffness to the uncompleted portions, which in reality do not exist yet. In the analysis, the locked-in strains due to increase in elastic modulus as the concrete hardens and the creep of the hardened concrete are taken into account. Most important of all, this method would enable fully automatic shrinkage movement analysis for the purpose of construction control.en_HK
dc.languageengen_HK
dc.publisherTechno-Press. The Journal's web site is located at http://technopress.kaist.ac.kr/?journal=cac&subpage=6en_HK
dc.relation.ispartofComputers and Concreteen_HK
dc.subjectConcrete flooren_HK
dc.subjectConstruction controlen_HK
dc.subjectCreepen_HK
dc.subjectFinite elementen_HK
dc.subjectShrinkageen_HK
dc.titleShrinkage movement analysis of reinforced concrete floors constructed in stagesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1598-8198&volume=6&issue=2&spage=167&epage=185&date=2009&atitle=Shrinkage+movement+analysis+of+reinforced+concrete+floors+constructed+in+stagesen_HK
dc.identifier.emailKwan, AKH:khkwan@hkucc.hku.hken_HK
dc.identifier.authorityKwan, AKH=rp00127en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.12989/cac.2009.6.2.167-
dc.identifier.scopuseid_2-s2.0-65449147943en_HK
dc.identifier.hkuros180645en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-65449147943&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume6en_HK
dc.identifier.issue2en_HK
dc.identifier.spage167en_HK
dc.identifier.epage185en_HK
dc.publisher.placeKorea, Republic ofen_HK
dc.identifier.scopusauthoridKwan, AKH=7101738204en_HK
dc.identifier.scopusauthoridNg, PL=15045284100en_HK

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