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Article: Effects of CSF content on rheology and cohesiveness of mortar

TitleEffects of CSF content on rheology and cohesiveness of mortar
Authors
KeywordsApparent viscosity
Concrete mix
Flowability
Packing density
Packing tests
Issue Date2011
PublisherThomas Telford (ICE Publishing). The Journal's web site is located at http://www.concrete-research.com
Citation
Magazine Of Concrete Research, 2011, v. 63 n. 2, p. 99-110 How to Cite?
AbstractIt is widely known that the addition of condensed silica fume to a concrete mix would improve the cohesiveness and hence segregation stability. However, quite often, this would also impair the flowability. To study the overall effects of condensed silica fume, an experimental programme was launched, whereby 45 mortar samples with different condensed silica fume contents and water/solid ratios, each representing the mortar portion of a concrete mix, were tested for their rheological properties, cohesiveness and packing densities. Their rheological properties were measured in terms of flow spread, flow rate, yield stress and apparent viscosity, while their cohesiveness and packing densities were measured using the sieve segregation and wet packing tests respectively. It was found that the effect of condensed silica fume on flowability could be positive or negative, depending on the water/solid ratio, and when the water/solid ratio is low, the addition of condensed silica fume would improve the flowability by increasing the packing density. It was also found that the effect of condensed silica fume on cohesiveness is always positive. Put together, the overall flowability-cohesiveness performance would be improved by the addition of condensed silica fume. Thomas Telford Ltd © 2011.
Persistent Identifierhttp://hdl.handle.net/10722/139067
ISSN
2015 Impact Factor: 1.227
2015 SCImago Journal Rankings: 0.955
ISI Accession Number ID
Funding AgencyGrant Number
Research Grants Council of the Hong Kong SAR, China713309
Funding Information:

The work described in this paper was fully supported by a grant from the Research Grants Council of the Hong Kong SAR, China (Project No. 713309).

References

 

DC FieldValueLanguage
dc.contributor.authorKwan, AKHen_HK
dc.contributor.authorFung, WWSen_HK
dc.date.accessioned2011-09-23T05:44:43Z-
dc.date.available2011-09-23T05:44:43Z-
dc.date.issued2011en_HK
dc.identifier.citationMagazine Of Concrete Research, 2011, v. 63 n. 2, p. 99-110en_HK
dc.identifier.issn0024-9831en_HK
dc.identifier.urihttp://hdl.handle.net/10722/139067-
dc.description.abstractIt is widely known that the addition of condensed silica fume to a concrete mix would improve the cohesiveness and hence segregation stability. However, quite often, this would also impair the flowability. To study the overall effects of condensed silica fume, an experimental programme was launched, whereby 45 mortar samples with different condensed silica fume contents and water/solid ratios, each representing the mortar portion of a concrete mix, were tested for their rheological properties, cohesiveness and packing densities. Their rheological properties were measured in terms of flow spread, flow rate, yield stress and apparent viscosity, while their cohesiveness and packing densities were measured using the sieve segregation and wet packing tests respectively. It was found that the effect of condensed silica fume on flowability could be positive or negative, depending on the water/solid ratio, and when the water/solid ratio is low, the addition of condensed silica fume would improve the flowability by increasing the packing density. It was also found that the effect of condensed silica fume on cohesiveness is always positive. Put together, the overall flowability-cohesiveness performance would be improved by the addition of condensed silica fume. Thomas Telford Ltd © 2011.en_HK
dc.languageengen_US
dc.publisherThomas Telford (ICE Publishing). The Journal's web site is located at http://www.concrete-research.comen_HK
dc.relation.ispartofMagazine of Concrete Researchen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
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.subjectApparent viscosity-
dc.subjectConcrete mix-
dc.subjectFlowability-
dc.subjectPacking density-
dc.subjectPacking tests-
dc.titleEffects of CSF content on rheology and cohesiveness of mortaren_HK
dc.typeArticleen_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/macr.9.00175en_HK
dc.identifier.scopuseid_2-s2.0-79951497927en_HK
dc.identifier.hkuros193764en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79951497927&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume63en_HK
dc.identifier.issue2en_HK
dc.identifier.spage99en_HK
dc.identifier.epage110en_HK
dc.identifier.isiWOS:000286423100003-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridKwan, AKH=7101738204en_HK
dc.identifier.scopusauthoridFung, WWS=36091084700en_HK

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