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Article: Ternary blending with metakaolin and silica fume to improve packing density and performance of binder paste

TitleTernary blending with metakaolin and silica fume to improve packing density and performance of binder paste
Authors
KeywordsMetakaolin
Packing density
Permeable porosity
Silica fume
Water film thickness
Issue Date2020
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/conbuildmat
Citation
Construction and Building Materials, 2020, v. 252, p. article no. 119031 How to Cite?
AbstractIn theory, ternary blending of cement with metakaolin (MK), which is of finer size, and silica fume (SF), which is even finer, would improve the packing density (PD) by successively filling the voids between cement grains. This should release more excess water (water in excess of that filled into voids) for fresh properties improvement and densify the microstructure for hardened properties improvement. To verify this postulation and reveal how and why (cement + MK + SF) ternary blending improves the fresh and hardened properties, 21 binder pastes with various MK and SF contents and a constant water/binder ratio were produced for flowability, adhesiveness, strength, sorptivity and porosity testing and microstructure observation, and the corresponding binder mixes were produced for PD measurement. The results showed that such ternary blending could improve the PD and both the fresh and hardened properties. In-depth analysis proved that the additions of MK and/or SF exerted influence through the eventual changes in PD and water film thickness (WFT). Lastly, plots depicting the concurrent flowability-strength and flowability-durability performances are produced to help find the optimum MK and SF contents for best overall performance.
Persistent Identifierhttp://hdl.handle.net/10722/290881
ISSN
2020 Impact Factor: 6.141
2020 SCImago Journal Rankings: 1.662
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChen, JJ-
dc.contributor.authorNg, PL-
dc.contributor.authorChu, SH-
dc.contributor.authorGuan, GX-
dc.contributor.authorKwan, AKH-
dc.date.accessioned2020-11-02T05:48:26Z-
dc.date.available2020-11-02T05:48:26Z-
dc.date.issued2020-
dc.identifier.citationConstruction and Building Materials, 2020, v. 252, p. article no. 119031-
dc.identifier.issn0950-0618-
dc.identifier.urihttp://hdl.handle.net/10722/290881-
dc.description.abstractIn theory, ternary blending of cement with metakaolin (MK), which is of finer size, and silica fume (SF), which is even finer, would improve the packing density (PD) by successively filling the voids between cement grains. This should release more excess water (water in excess of that filled into voids) for fresh properties improvement and densify the microstructure for hardened properties improvement. To verify this postulation and reveal how and why (cement + MK + SF) ternary blending improves the fresh and hardened properties, 21 binder pastes with various MK and SF contents and a constant water/binder ratio were produced for flowability, adhesiveness, strength, sorptivity and porosity testing and microstructure observation, and the corresponding binder mixes were produced for PD measurement. The results showed that such ternary blending could improve the PD and both the fresh and hardened properties. In-depth analysis proved that the additions of MK and/or SF exerted influence through the eventual changes in PD and water film thickness (WFT). Lastly, plots depicting the concurrent flowability-strength and flowability-durability performances are produced to help find the optimum MK and SF contents for best overall performance.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/conbuildmat-
dc.relation.ispartofConstruction and Building Materials-
dc.subjectMetakaolin-
dc.subjectPacking density-
dc.subjectPermeable porosity-
dc.subjectSilica fume-
dc.subjectWater film thickness-
dc.titleTernary blending with metakaolin and silica fume to improve packing density and performance of binder paste-
dc.typeArticle-
dc.identifier.emailChu, SH: shchu@connect.hku.hk-
dc.identifier.emailKwan, AKH: khkwan@hkucc.hku.hk-
dc.identifier.authorityKwan, AKH=rp00127-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.conbuildmat.2020.119031-
dc.identifier.scopuseid_2-s2.0-85083289734-
dc.identifier.hkuros318238-
dc.identifier.volume252-
dc.identifier.spagearticle no. 119031-
dc.identifier.epagearticle no. 119031-
dc.identifier.isiWOS:000538801700018-
dc.publisher.placeNetherlands-
dc.identifier.issnl0950-0618-

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