File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Co-addition of metakaolin and silica fume in mortar: effects and advantages

TitleCo-addition of metakaolin and silica fume in mortar: effects and advantages
Authors
KeywordsFresh properties
Hardened properties
Metakaolin
Silica fume
Synergistic effect
Issue Date2019
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/conbuildmat
Citation
Construction and Building Materials, 2019, v. 197, p. 716-724 How to Cite?
AbstractMetakaolin (MK), ground to finer than cement, is an emerging pozzolanic material for concrete production. Silica fume (SF), which is even finer than MK, has been proven to be effective in improving the strength of concrete. Both are being added separately, but in theory, they can also be added together. To explore the possible co-addition of MK and SF and evaluate their combined effects, mortar mixes with varying water, MK and SF contents were tested for their fresh and hardened properties. From the experimental results, it was found that regarding workability, MK has positive effect, SF has negative effect, and co-addition of MK and SF can mitigate the negative effect of SF. Regarding strength, both MK and SF have positive effects, but co-addition of MK and SF has the synergistic effect that the increase in strength due to co-addition of MK and SF is larger than the increase in strength due to sole addition of MK or sole addition of SF. Such synergistic effect should be particularly useful for production of high-performance concrete.
Persistent Identifierhttp://hdl.handle.net/10722/277202
ISSN
2019 Impact Factor: 4.419
2015 SCImago Journal Rankings: 1.606

 

DC FieldValueLanguage
dc.contributor.authorChu, SH-
dc.contributor.authorKwan, AKH-
dc.date.accessioned2019-09-20T08:46:34Z-
dc.date.available2019-09-20T08:46:34Z-
dc.date.issued2019-
dc.identifier.citationConstruction and Building Materials, 2019, v. 197, p. 716-724-
dc.identifier.issn0950-0618-
dc.identifier.urihttp://hdl.handle.net/10722/277202-
dc.description.abstractMetakaolin (MK), ground to finer than cement, is an emerging pozzolanic material for concrete production. Silica fume (SF), which is even finer than MK, has been proven to be effective in improving the strength of concrete. Both are being added separately, but in theory, they can also be added together. To explore the possible co-addition of MK and SF and evaluate their combined effects, mortar mixes with varying water, MK and SF contents were tested for their fresh and hardened properties. From the experimental results, it was found that regarding workability, MK has positive effect, SF has negative effect, and co-addition of MK and SF can mitigate the negative effect of SF. Regarding strength, both MK and SF have positive effects, but co-addition of MK and SF has the synergistic effect that the increase in strength due to co-addition of MK and SF is larger than the increase in strength due to sole addition of MK or sole addition of SF. Such synergistic effect should be particularly useful for production of high-performance concrete.-
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.subjectFresh properties-
dc.subjectHardened properties-
dc.subjectMetakaolin-
dc.subjectSilica fume-
dc.subjectSynergistic effect-
dc.titleCo-addition of metakaolin and silica fume in mortar: effects and advantages-
dc.typeArticle-
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.2018.11.244-
dc.identifier.scopuseid_2-s2.0-85057441280-
dc.identifier.hkuros305495-
dc.identifier.volume197-
dc.identifier.spage716-
dc.identifier.epage724-
dc.publisher.placeNetherlands-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats