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Article: Reutilizing clay brick dust as paste substitution to produce environment-friendly durable mortar

TitleReutilizing clay brick dust as paste substitution to produce environment-friendly durable mortar
Authors
KeywordsClay brick waste
Drying shrinkage
Durability
Paste substitution method
Sulphate resistance
Issue Date2020
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jclepro
Citation
Journal of Cleaner Production, 2020, v. 274, p. article no. 122787 How to Cite?
AbstractAbstract Clay brick waste is being generated in huge quantity every year due to increasing construction and demolition activities, causing serious waste is disposal problems. In traditional cement substitution or aggregate substitution methods, a limited amount of the clay brick waste can be reused in mortar or concrete to substitute part of cement or aggregate. This study attempted to reutilize clay brick dust (CBD) based on paste substitution method (by substituting a portion of the paste by an equal volume of CBD without changing the paste composition and water/cementitious materials ratio) to produce mortar, and conducted tests to study its workability in terms of flow spread, and durability in terms of sulphate resistance, water resistance and shrinkage resistance. The findings revealed that reutilizing CBD as paste substitution would increase the superplasticizer demand, but could substantially enhance the sulphate, water and shrinkage resistances, and reduce the cement content and associated carbon footprint. It was shown that up to 20% CBD by volume of the mortar may be added to reduce the cement content by 33% without causing adverse effects. Such percentage reduction in cement content is larger than possible with cement or aggregate substitution.
Persistent Identifierhttp://hdl.handle.net/10722/290544
ISSN
2023 Impact Factor: 9.7
2023 SCImago Journal Rankings: 2.058
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLi, LG-
dc.contributor.authorLin, ZH-
dc.contributor.authorChen, GM-
dc.contributor.authorKwan, AKH-
dc.date.accessioned2020-11-02T05:43:45Z-
dc.date.available2020-11-02T05:43:45Z-
dc.date.issued2020-
dc.identifier.citationJournal of Cleaner Production, 2020, v. 274, p. article no. 122787-
dc.identifier.issn0959-6526-
dc.identifier.urihttp://hdl.handle.net/10722/290544-
dc.description.abstractAbstract Clay brick waste is being generated in huge quantity every year due to increasing construction and demolition activities, causing serious waste is disposal problems. In traditional cement substitution or aggregate substitution methods, a limited amount of the clay brick waste can be reused in mortar or concrete to substitute part of cement or aggregate. This study attempted to reutilize clay brick dust (CBD) based on paste substitution method (by substituting a portion of the paste by an equal volume of CBD without changing the paste composition and water/cementitious materials ratio) to produce mortar, and conducted tests to study its workability in terms of flow spread, and durability in terms of sulphate resistance, water resistance and shrinkage resistance. The findings revealed that reutilizing CBD as paste substitution would increase the superplasticizer demand, but could substantially enhance the sulphate, water and shrinkage resistances, and reduce the cement content and associated carbon footprint. It was shown that up to 20% CBD by volume of the mortar may be added to reduce the cement content by 33% without causing adverse effects. Such percentage reduction in cement content is larger than possible with cement or aggregate substitution.-
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.subjectClay brick waste-
dc.subjectDrying shrinkage-
dc.subjectDurability-
dc.subjectPaste substitution method-
dc.subjectSulphate resistance-
dc.titleReutilizing clay brick dust as paste substitution to produce environment-friendly durable 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.2020.122787-
dc.identifier.scopuseid_2-s2.0-85088113873-
dc.identifier.hkuros318239-
dc.identifier.volume274-
dc.identifier.spagearticle no. 122787-
dc.identifier.epagearticle no. 122787-
dc.identifier.isiWOS:000579407000004-
dc.publisher.placeNetherlands-
dc.identifier.issnl0959-6526-

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