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Article: Effects of packing density, excess water and solid surface area on flowability of cement paste

TitleEffects of packing density, excess water and solid surface area on flowability of cement paste
Authors
Issue Date2008
PublisherThomas Telford (ICE Publishing). The Journal's web site is located at http://www.cement-research.com
Citation
Advances in Cement Research, 2008, v. 20 n. 1, p. 1-11 How to Cite?
AbstractAlthough it has been postulated for many years that it is excess water rather than whole water that lubricates the cementitious materials and governs flowability of paste (excess water is water in excess of that needed to fill up voids), there has been no detailed investigations to study the actual effects of excess water. This was due to the lack of a suitable method for measuring the packing density and voids content of cementitious materials, To resolve the problem, the authors have recently developed a new wet packing method that was applied herein to measure the packing densities and voids contents of cementitious materials containing different amounts of cement, pulverised fuel ash and condensed silica fume. The flowability properties of the paste formed of the cementitious materials with different water contents were also measured and correlated to the excess water contents, each determined as water content minus voids content. The results revealed that whereas an improvement in packing density would increase excess water content, flowability is governed mainly by excess water to solid volume and excess water to solid surface area ratios.
Persistent Identifierhttp://hdl.handle.net/10722/71398
ISSN
2015 Impact Factor: 0.949
2015 SCImago Journal Rankings: 0.692
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorKwan, AKHen_HK
dc.contributor.authorWong, HHCen_HK
dc.date.accessioned2010-09-06T06:31:38Z-
dc.date.available2010-09-06T06:31:38Z-
dc.date.issued2008en_HK
dc.identifier.citationAdvances in Cement Research, 2008, v. 20 n. 1, p. 1-11en_HK
dc.identifier.issn0951-7197en_HK
dc.identifier.urihttp://hdl.handle.net/10722/71398-
dc.description.abstractAlthough it has been postulated for many years that it is excess water rather than whole water that lubricates the cementitious materials and governs flowability of paste (excess water is water in excess of that needed to fill up voids), there has been no detailed investigations to study the actual effects of excess water. This was due to the lack of a suitable method for measuring the packing density and voids content of cementitious materials, To resolve the problem, the authors have recently developed a new wet packing method that was applied herein to measure the packing densities and voids contents of cementitious materials containing different amounts of cement, pulverised fuel ash and condensed silica fume. The flowability properties of the paste formed of the cementitious materials with different water contents were also measured and correlated to the excess water contents, each determined as water content minus voids content. The results revealed that whereas an improvement in packing density would increase excess water content, flowability is governed mainly by excess water to solid volume and excess water to solid surface area ratios.en_HK
dc.languageengen_HK
dc.publisherThomas Telford (ICE Publishing). The Journal's web site is located at http://www.cement-research.comen_HK
dc.relation.ispartofAdvances in Cement Researchen_HK
dc.rightsAdvances in Cement Research. Copyright © Thomas Telford Ltd.en_HK
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.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleEffects of packing density, excess water and solid surface area on flowability of cement pasteen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0951-7197&volume=20&issue=1&spage=1&epage=11&date=2008&atitle=Effects+of+packing+density,+excess+water+and+solid+surface+area+on+flowability+of+cement+pasteen_HK
dc.identifier.emailKwan, AKH:khkwan@hkucc.hku.hken_HK
dc.identifier.authorityKwan, AKH=rp00127en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1680/adcr.2008.20.1.1en_HK
dc.identifier.scopuseid_2-s2.0-38149126388en_HK
dc.identifier.hkuros152078en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-38149126388&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume20en_HK
dc.identifier.issue1en_HK
dc.identifier.spage1en_HK
dc.identifier.epage11en_HK
dc.identifier.isiWOS:000253315800001-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridKwan, AKH=7101738204en_HK
dc.identifier.scopusauthoridWong, HHC=14421608900en_HK

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