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Article: Effects of cement and water contents on adiabatic temperature rise of concrete

TitleEffects of cement and water contents on adiabatic temperature rise of concrete
Authors
KeywordsAdiabatic curing test
Early temperature rise
Early thermal cracking
Issue Date2009
PublisherAmerican Concrete Institute. The Journal's web site is located at http://www.concrete.org/PUBS/JOURNALS/MJHOME.ASP
Citation
Aci Materials Journal, 2009, v. 106 n. 1, p. 42-49 How to Cite?
AbstractThe temperature rise of concrete during curing is dependent on the mixture composition and proportions, among which the cement content should be the major factor. If the water content is relatively low, however, the cement would not fully hydrate and the water content should also have significant effects. This paper reports an experimental program aiming to investigate the combined effects of cement and water contents by measuring the adiabatic temperature rise of concrete mixtures with different mixture proportions. A newly developed semi-adiabatic curing test method with heat loss compensation applied was employed to measure the adiabatic temperature rise of the concrete mixtures. The results reveal that, for a given paste volume, the adiabatic temperature rise would be highest at a water-cement ratio (w/c) of 0.36; therefore, the adiabatic temperature rise of a higher strength concrete is not necessarily higher. Furthermore, the degree of hydration would gradually decrease as the w/c decreases. Based on these results, design charts and formulas for predicting the adiabatic temperature rise, heat generation, and degree of hydration of concrete mixtures with w/c ranging from 0.28 to 0.48 have been developed. Copyright © 2009, American Concrete Institute. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/124571
ISSN
2015 Impact Factor: 1.154
2015 SCImago Journal Rankings: 1.430
References

 

DC FieldValueLanguage
dc.contributor.authorNg, IYTen_HK
dc.contributor.authorNg, PLen_HK
dc.contributor.authorKwan, AKHen_HK
dc.date.accessioned2010-10-31T10:41:57Z-
dc.date.available2010-10-31T10:41:57Z-
dc.date.issued2009en_HK
dc.identifier.citationAci Materials Journal, 2009, v. 106 n. 1, p. 42-49en_HK
dc.identifier.issn0889-325Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/124571-
dc.description.abstractThe temperature rise of concrete during curing is dependent on the mixture composition and proportions, among which the cement content should be the major factor. If the water content is relatively low, however, the cement would not fully hydrate and the water content should also have significant effects. This paper reports an experimental program aiming to investigate the combined effects of cement and water contents by measuring the adiabatic temperature rise of concrete mixtures with different mixture proportions. A newly developed semi-adiabatic curing test method with heat loss compensation applied was employed to measure the adiabatic temperature rise of the concrete mixtures. The results reveal that, for a given paste volume, the adiabatic temperature rise would be highest at a water-cement ratio (w/c) of 0.36; therefore, the adiabatic temperature rise of a higher strength concrete is not necessarily higher. Furthermore, the degree of hydration would gradually decrease as the w/c decreases. Based on these results, design charts and formulas for predicting the adiabatic temperature rise, heat generation, and degree of hydration of concrete mixtures with w/c ranging from 0.28 to 0.48 have been developed. Copyright © 2009, American Concrete Institute. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherAmerican Concrete Institute. The Journal's web site is located at http://www.concrete.org/PUBS/JOURNALS/MJHOME.ASPen_HK
dc.relation.ispartofACI Materials Journalen_HK
dc.subjectAdiabatic curing testen_HK
dc.subjectEarly temperature riseen_HK
dc.subjectEarly thermal crackingen_HK
dc.titleEffects of cement and water contents on adiabatic temperature rise of concreteen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0889-325X&volume=106&issue=1&spage=42&epage=49&date=2009&atitle=Effects+of+cement+and+water+contents+on+adiabatic+temperature+rise+of+concrete-
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.scopuseid_2-s2.0-59649088807en_HK
dc.identifier.hkuros180631en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-59649088807&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume106en_HK
dc.identifier.issue1en_HK
dc.identifier.spage42en_HK
dc.identifier.epage49en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridNg, IYT=12243904600en_HK
dc.identifier.scopusauthoridNg, PL=15045284100en_HK
dc.identifier.scopusauthoridKwan, AKH=7101738204en_HK

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