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Conference Paper: Packing density improvement through addition of limestone fines, superfine cement and condensed silica fume

TitlePacking density improvement through addition of limestone fines, superfine cement and condensed silica fume
Authors
Issue Date2016
PublisherScientific Research Publishing, Inc. The Journal's web site is located at http://www.scirp.org/journal/msce
Citation
International Conference on Cement and Concrete Technology (CCT 2016), Suzhou, China, 25-27 July 2016. Proceedings in Journal of Materials Science and Chemical Engineering, 2016, v. 4 n. 7, p. 29-36 How to Cite?
AbstractAdoption of a low water/powder (W/P) ratio is the key to improve the strength and durability of concrete, which relies on a high packing density because fresh concrete requires excess water to offer flowability. To obtain a high packing density, powders with different particle sizes, including limestone fines (LSF), superfine cement (SFC), condensed silica fume (CSF), were added to the cement paste and the resulting packing densities were measured directly by a newly-developed wet packing test. Results demonstrated that addition of powders with a finer size would more significantly improve the packing density but the powders should be at least as fine as 1/4 of the OPC to effectively improve the packing density. Packing density and voids ratio relationship showed that a small increase in packing density can significantly decrease the voids ratio, which could allow the W/P ratio to be reduced to improve the strength and durability of the concrete without compromising the flowability.
Persistent Identifierhttp://hdl.handle.net/10722/250131
ISSN

 

DC FieldValueLanguage
dc.contributor.authorChen, JJ-
dc.contributor.authorKwan, AKH-
dc.contributor.authorNg, PL-
dc.contributor.authorLi, LG-
dc.date.accessioned2017-12-20T09:21:11Z-
dc.date.available2017-12-20T09:21:11Z-
dc.date.issued2016-
dc.identifier.citationInternational Conference on Cement and Concrete Technology (CCT 2016), Suzhou, China, 25-27 July 2016. Proceedings in Journal of Materials Science and Chemical Engineering, 2016, v. 4 n. 7, p. 29-36-
dc.identifier.issn2327-6045-
dc.identifier.urihttp://hdl.handle.net/10722/250131-
dc.description.abstractAdoption of a low water/powder (W/P) ratio is the key to improve the strength and durability of concrete, which relies on a high packing density because fresh concrete requires excess water to offer flowability. To obtain a high packing density, powders with different particle sizes, including limestone fines (LSF), superfine cement (SFC), condensed silica fume (CSF), were added to the cement paste and the resulting packing densities were measured directly by a newly-developed wet packing test. Results demonstrated that addition of powders with a finer size would more significantly improve the packing density but the powders should be at least as fine as 1/4 of the OPC to effectively improve the packing density. Packing density and voids ratio relationship showed that a small increase in packing density can significantly decrease the voids ratio, which could allow the W/P ratio to be reduced to improve the strength and durability of the concrete without compromising the flowability.-
dc.languageeng-
dc.publisherScientific Research Publishing, Inc. The Journal's web site is located at http://www.scirp.org/journal/msce-
dc.relation.ispartofJournal of Materials Science and Chemical Engineering-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titlePacking density improvement through addition of limestone fines, superfine cement and condensed silica fume-
dc.typeConference_Paper-
dc.identifier.emailKwan, AKH: khkwan@hkucc.hku.hk-
dc.identifier.authorityKwan, AKH=rp00127-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.4236/msce.2016.47005-
dc.identifier.hkuros283712-
dc.identifier.volume4-
dc.identifier.issue7-
dc.identifier.spage29-
dc.identifier.epage36-
dc.publisher.placeUnited States-

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