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Article: Adiabatic temperature rise of incompletely hydrated cement concrete

TitleAdiabatic temperature rise of incompletely hydrated cement concrete
Authors
KeywordsAdiabatic temperature rise
Cement content
Heat loss compensation
Semi-adiabatic curing test
Water content
Issue Date2009
PublisherTrans Tech Publications Ltd. The Journal's web site is located at http://www.scientific.net
Citation
Key Engineering Materials, 2009, v. 400-402, p. 157-162 How to Cite?
AbstractThe temperature rise of concrete during hardening is intimately related to the mix proportion, among which the cement content is a major factor. However, high-strength concrete mixes are often proportioned with low water contents which leads to incomplete hydration of cement contained therein. Hence, the conventional rule of determining concrete temperature rise solely based on the cement content may not yield accurate estimations. An experimental program has been launched to investigate the coupled effects of cement and water contents on the adiabatic temperature rise of concrete. Eighteen concrete mixes were tested with a newly developed semi-adiabatic curing test method and their adiabatic temperature rise obtained by applying heat loss compensation to the test results. The results revealed that, when the water/cement ratio is lower than 0.36, both cement and water contents have effects on the adiabatic temperature rise of concrete. Prediction formula and design chart of adiabatic temperature rise, which are accurate to ±1.3° compared with the test results, are developed. Furthermore, prediction formula of the degree of hydration of concrete is recommended.
Persistent Identifierhttp://hdl.handle.net/10722/124552
ISSN
2005 Impact Factor: 0.224
2015 SCImago Journal Rankings: 0.173
References

 

DC FieldValueLanguage
dc.contributor.authorNg, PLen_HK
dc.contributor.authorNg, IYTen_HK
dc.contributor.authorKwan, AKHen_HK
dc.date.accessioned2010-10-31T10:40:56Z-
dc.date.available2010-10-31T10:40:56Z-
dc.date.issued2009en_HK
dc.identifier.citationKey Engineering Materials, 2009, v. 400-402, p. 157-162en_HK
dc.identifier.issn1013-9826en_HK
dc.identifier.urihttp://hdl.handle.net/10722/124552-
dc.description.abstractThe temperature rise of concrete during hardening is intimately related to the mix proportion, among which the cement content is a major factor. However, high-strength concrete mixes are often proportioned with low water contents which leads to incomplete hydration of cement contained therein. Hence, the conventional rule of determining concrete temperature rise solely based on the cement content may not yield accurate estimations. An experimental program has been launched to investigate the coupled effects of cement and water contents on the adiabatic temperature rise of concrete. Eighteen concrete mixes were tested with a newly developed semi-adiabatic curing test method and their adiabatic temperature rise obtained by applying heat loss compensation to the test results. The results revealed that, when the water/cement ratio is lower than 0.36, both cement and water contents have effects on the adiabatic temperature rise of concrete. Prediction formula and design chart of adiabatic temperature rise, which are accurate to ±1.3° compared with the test results, are developed. Furthermore, prediction formula of the degree of hydration of concrete is recommended.en_HK
dc.languageengen_HK
dc.publisherTrans Tech Publications Ltd. The Journal's web site is located at http://www.scientific.neten_HK
dc.relation.ispartofKey Engineering Materialsen_HK
dc.subjectAdiabatic temperature riseen_HK
dc.subjectCement contenten_HK
dc.subjectHeat loss compensationen_HK
dc.subjectSemi-adiabatic curing testen_HK
dc.subjectWater contenten_HK
dc.titleAdiabatic temperature rise of incompletely hydrated cement concreteen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1013-9826&volume=400-402&spage=157&epage=162&date=2009&atitle=Adiabatic+temperature+rise+of+incompletely+hydrated+cement+concreteen_HK
dc.identifier.emailNg, IYT: ivanytng@graduate.hku.hken_HK
dc.identifier.emailKwan, AKH: khkwan@hkucc.hku.hken_HK
dc.identifier.authorityNg, IYT=rp00156en_HK
dc.identifier.authorityKwan, AKH=rp00127en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.4028/0-87849-349-2.157en_HK
dc.identifier.scopuseid_2-s2.0-58849135329en_HK
dc.identifier.hkuros152095en_HK
dc.identifier.hkuros180627-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-58849135329&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume400-402en_HK
dc.identifier.spage157en_HK
dc.identifier.epage162en_HK
dc.publisher.placeSwitzerlanden_HK
dc.identifier.scopusauthoridNg, PL=15045284100en_HK
dc.identifier.scopusauthoridNg, IYT=12243904600en_HK
dc.identifier.scopusauthoridKwan, AKH=7101738204en_HK

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