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Article: Packing optimization of paste and aggregate phases for sustainability and performance improvement of concrete

TitlePacking optimization of paste and aggregate phases for sustainability and performance improvement of concrete
Authors
KeywordsFilm thicknesses
Granite polishing waste
Packing density
Sustainability
Wet packing method
Issue Date2021
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/issn/09218831
Citation
Advanced Powder Technology, 2021, v. 32 n. 4, p. 987-997 How to Cite?
AbstractPrevious research demonstrated that the packing density, water film thickness and paste film thickness have great effects on the performance of a concrete mix. On this basis, it is herein proposed a strategy of adding a powder waste as both paste and aggregate replacements to reduce the cement and aggregate consumptions for sustainable development and to improve the packing densities of both the paste phase and aggregate phase for performance improvement. To evaluate such strategy, 25 concrete mixes incorporating granite polishing waste (GPW) as paste and aggregate replacements were tested. The results revealed that the addition of GPW as paste replacement up to 7.5% and as aggregate replacement up to 10% would most effectively increase the packing densities of the paste phase, aggregate phase and whole concrete mix, and thereby increasing the strength of the concrete, despite reduction in cement content. Such increases in packing density would also increase the excess water and excess paste to avoid excessive reductions in the water and paste film thicknesses, which are needed to maintain workability. Last but not least, separate optimization of the paste phase and aggregate phase is an effective way of optimizing the concrete mix design.
Persistent Identifierhttp://hdl.handle.net/10722/308070
ISSN
2020 Impact Factor: 4.833
2020 SCImago Journal Rankings: 0.849
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChen, JJ-
dc.contributor.authorGuan, GX-
dc.contributor.authorNg, PL-
dc.contributor.authorKwan, AKH-
dc.contributor.authorChu, SH-
dc.date.accessioned2021-11-12T13:42:05Z-
dc.date.available2021-11-12T13:42:05Z-
dc.date.issued2021-
dc.identifier.citationAdvanced Powder Technology, 2021, v. 32 n. 4, p. 987-997-
dc.identifier.issn0921-8831-
dc.identifier.urihttp://hdl.handle.net/10722/308070-
dc.description.abstractPrevious research demonstrated that the packing density, water film thickness and paste film thickness have great effects on the performance of a concrete mix. On this basis, it is herein proposed a strategy of adding a powder waste as both paste and aggregate replacements to reduce the cement and aggregate consumptions for sustainable development and to improve the packing densities of both the paste phase and aggregate phase for performance improvement. To evaluate such strategy, 25 concrete mixes incorporating granite polishing waste (GPW) as paste and aggregate replacements were tested. The results revealed that the addition of GPW as paste replacement up to 7.5% and as aggregate replacement up to 10% would most effectively increase the packing densities of the paste phase, aggregate phase and whole concrete mix, and thereby increasing the strength of the concrete, despite reduction in cement content. Such increases in packing density would also increase the excess water and excess paste to avoid excessive reductions in the water and paste film thicknesses, which are needed to maintain workability. Last but not least, separate optimization of the paste phase and aggregate phase is an effective way of optimizing the concrete mix design.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/issn/09218831-
dc.relation.ispartofAdvanced Powder Technology-
dc.subjectFilm thicknesses-
dc.subjectGranite polishing waste-
dc.subjectPacking density-
dc.subjectSustainability-
dc.subjectWet packing method-
dc.titlePacking optimization of paste and aggregate phases for sustainability and performance improvement of concrete-
dc.typeArticle-
dc.identifier.authorityKwan, AKH=rp00127-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.apt.2021.02.008-
dc.identifier.scopuseid_2-s2.0-85101137985-
dc.identifier.hkuros329686-
dc.identifier.volume32-
dc.identifier.issue4-
dc.identifier.spage987-
dc.identifier.epage997-
dc.identifier.isiWOS:000640592300002-
dc.publisher.placeNetherlands-

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