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Article: Adding granite polishing waste to reduce sand and cement contents and improve performance of mortar

TitleAdding granite polishing waste to reduce sand and cement contents and improve performance of mortar
Authors
KeywordsCement replacement
Granite polishing waste
Packing density
Sand replacement
Sustainability
Issue Date2021
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jclepro
Citation
Journal of Cleaner Production, 2021, v. 279, p. article no. 123653 How to Cite?
AbstractSand and cement are indispensable ingredients of concrete but their production is causing sustainability problems. Two strategies have been adopted to reduce their consumption, namely, sand replacement with solid waste and cement replacement with solid waste. However, sand replacement does not reduce cement content whereas cement replacement impairs performance. Herein, it is proposed that the two strategies may be combined to reduce the sand and cement contents without lowering performance. To evaluate the feasibility of such combined strategy, mortar mixes with granite polishing waste (GPW) added as sand and/or cement replacement were tested. It was found that adding GPW as sand replacement increased strength and durability whereas adding GPW as cement replacement increased flowability but decreased strength and durability. And, the contribution of the GPW arises mainly from the resulting improvement in particle packing. Lastly, among the mortar mixes tested, those with GPW added to replace 10% sand and 5% cement have better overall performance and lower sand and cement contents than the control mortar mix containing no GPW. This confirmed the desirable outcome of combined adoption of the sand and cement replacement strategies to reduce the sand and cement contents without impairing the performance.
Persistent Identifierhttp://hdl.handle.net/10722/307855
ISSN
2020 Impact Factor: 9.297
2020 SCImago Journal Rankings: 1.937
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChen, JJ-
dc.contributor.authorLi, BH-
dc.contributor.authorNg, PL-
dc.contributor.authorKwan, AKH-
dc.date.accessioned2021-11-12T13:38:53Z-
dc.date.available2021-11-12T13:38:53Z-
dc.date.issued2021-
dc.identifier.citationJournal of Cleaner Production, 2021, v. 279, p. article no. 123653-
dc.identifier.issn0959-6526-
dc.identifier.urihttp://hdl.handle.net/10722/307855-
dc.description.abstractSand and cement are indispensable ingredients of concrete but their production is causing sustainability problems. Two strategies have been adopted to reduce their consumption, namely, sand replacement with solid waste and cement replacement with solid waste. However, sand replacement does not reduce cement content whereas cement replacement impairs performance. Herein, it is proposed that the two strategies may be combined to reduce the sand and cement contents without lowering performance. To evaluate the feasibility of such combined strategy, mortar mixes with granite polishing waste (GPW) added as sand and/or cement replacement were tested. It was found that adding GPW as sand replacement increased strength and durability whereas adding GPW as cement replacement increased flowability but decreased strength and durability. And, the contribution of the GPW arises mainly from the resulting improvement in particle packing. Lastly, among the mortar mixes tested, those with GPW added to replace 10% sand and 5% cement have better overall performance and lower sand and cement contents than the control mortar mix containing no GPW. This confirmed the desirable outcome of combined adoption of the sand and cement replacement strategies to reduce the sand and cement contents without impairing the performance.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jclepro-
dc.relation.ispartofJournal of Cleaner Production-
dc.subjectCement replacement-
dc.subjectGranite polishing waste-
dc.subjectPacking density-
dc.subjectSand replacement-
dc.subjectSustainability-
dc.titleAdding granite polishing waste to reduce sand and cement contents and improve performance of mortar-
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.jclepro.2020.123653-
dc.identifier.scopuseid_2-s2.0-85091216329-
dc.identifier.hkuros329698-
dc.identifier.volume279-
dc.identifier.spagearticle no. 123653-
dc.identifier.epagearticle no. 123653-
dc.identifier.isiWOS:000596128900005-
dc.publisher.placeNetherlands-

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