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Influence of high-temperature and low-humidity curing on chloride penetration in blended cement concrete

dc.contributor.authorKhatib, Jamal M.
dc.contributor.authorMangat, P.S.
dc.date.accessioned2008-01-09T15:28:08Z
dc.date.available2008-01-09T15:28:08Z
dc.date.issued2002
dc.identifier.citationCement and Concrete Research, 32(11): 1743-1753
dc.identifier.issn00088846
dc.identifier.doi10.1016/S0008-8846(02)00857-8
dc.identifier.urihttp://hdl.handle.net/2436/15902
dc.descriptionMetadata only
dc.description.abstractThe influence of high-temperature and low-humidity curing on chloride penetration in concrete containing cement replacement materials was investigated. Three different mixes were studied: a control mix in which no cement replacement materials were added and two mixes where cement was partially replaced by 20% fly ash and 9% silica fume (by weight), respectively, at a constant water-to-binder ratio of 0.45. High-temperature curing was employed to simulate concrete temperature in hot climate. The results show that at early periods of exposure, initial curing has a substantial influence on chloride penetration in concrete. The effect of initial curing is much reduced after a long period of exposure. The chloride penetration at early ages of exposure is directly related to the porosity of the binder phase and the absorption of concrete. Higher chloride penetration resistance was observed when cement is partially replaced with either fly ash or silica fume.
dc.language.isoen
dc.publisherElsevier
dc.relation.urlhttp://www.ingentaconnect.com/content/els/00088846/2002/00000032/00000011/art00857
dc.subjectBlended cement
dc.subjectChloride
dc.subjectCuring
dc.subjectDiffusion
dc.subjectTemperature
dc.titleInfluence of high-temperature and low-humidity curing on chloride penetration in blended cement concrete
dc.typeJournal article
html.description.abstractThe influence of high-temperature and low-humidity curing on chloride penetration in concrete containing cement replacement materials was investigated. Three different mixes were studied: a control mix in which no cement replacement materials were added and two mixes where cement was partially replaced by 20% fly ash and 9% silica fume (by weight), respectively, at a constant water-to-binder ratio of 0.45. High-temperature curing was employed to simulate concrete temperature in hot climate. The results show that at early periods of exposure, initial curing has a substantial influence on chloride penetration in concrete. The effect of initial curing is much reduced after a long period of exposure. The chloride penetration at early ages of exposure is directly related to the porosity of the binder phase and the absorption of concrete. Higher chloride penetration resistance was observed when cement is partially replaced with either fly ash or silica fume.


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