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Article: Reutilization of clay brick waste in mortar: paste replacement versus cement replacement

TitleReutilization of clay brick waste in mortar: paste replacement versus cement replacement
Authors
KeywordsCarbon footprint
Cement content reduction
Clay brick waste
Eco-friendly concrete
Filler technology
Issue Date2019
PublisherAmerican Society of Civil Engineers. The Journal's web site is located at http://www.pubs.asce.org/journals/mt.html
Citation
Journal of Materials in Civil Engineering, 2019, v. 31 n. 7, p. article no. 04019129 How to Cite?
AbstractClay brick waste is one of the largest construction wastes by output. Traditionally, clay brick waste is reutilized in mortar/concrete as aggregate replacement after crushing or as cement replacement after grinding, but these two methods of reutilization have certain adverse effects on the quality of mortar/concrete. In this study, a new method, named the paste replacement method, was developed; in this method, clay brick dust (CBD) is used to replace cementitious paste with the paste composition kept unchanged. To compare the effectiveness of the paste replacement and cement replacement methods, mortar mixes with different replacement ratios of CBD (either as paste replacement or cement replacement) were tested to study their workability, strength, and microstructure. The test results showed that CBD added as paste replacement improved the strength and microstructure and substantially reduced the cement content, whereas adding CBD as cement replacement decreased the strength and loosened the microstructure. Hence, the paste replacement method is more promising for recycling clay brick waste and producing eco-friendly concrete.
Persistent Identifierhttp://hdl.handle.net/10722/277205
ISSN
2019 Impact Factor: 2.169
2015 SCImago Journal Rankings: 0.965

 

DC FieldValueLanguage
dc.contributor.authorLi, LG-
dc.contributor.authorLin, ZH-
dc.contributor.authorChen, GM-
dc.contributor.authorKwan, AKH-
dc.contributor.authorLi, ZH-
dc.date.accessioned2019-09-20T08:46:37Z-
dc.date.available2019-09-20T08:46:37Z-
dc.date.issued2019-
dc.identifier.citationJournal of Materials in Civil Engineering, 2019, v. 31 n. 7, p. article no. 04019129-
dc.identifier.issn0899-1561-
dc.identifier.urihttp://hdl.handle.net/10722/277205-
dc.description.abstractClay brick waste is one of the largest construction wastes by output. Traditionally, clay brick waste is reutilized in mortar/concrete as aggregate replacement after crushing or as cement replacement after grinding, but these two methods of reutilization have certain adverse effects on the quality of mortar/concrete. In this study, a new method, named the paste replacement method, was developed; in this method, clay brick dust (CBD) is used to replace cementitious paste with the paste composition kept unchanged. To compare the effectiveness of the paste replacement and cement replacement methods, mortar mixes with different replacement ratios of CBD (either as paste replacement or cement replacement) were tested to study their workability, strength, and microstructure. The test results showed that CBD added as paste replacement improved the strength and microstructure and substantially reduced the cement content, whereas adding CBD as cement replacement decreased the strength and loosened the microstructure. Hence, the paste replacement method is more promising for recycling clay brick waste and producing eco-friendly concrete.-
dc.languageeng-
dc.publisherAmerican Society of Civil Engineers. The Journal's web site is located at http://www.pubs.asce.org/journals/mt.html-
dc.relation.ispartofJournal of Materials in Civil Engineering-
dc.rightsJournal of Materials in Civil Engineering. Copyright © American Society of Civil Engineers.-
dc.rightsThis material may be downloaded for personal use only. Any other use requires prior permission of the American Society of Civil Engineers. This material may be found at [URL/link of abstract in the ASCE Library or Civil Engineering Database].-
dc.subjectCarbon footprint-
dc.subjectCement content reduction-
dc.subjectClay brick waste-
dc.subjectEco-friendly concrete-
dc.subjectFiller technology-
dc.titleReutilization of clay brick waste in mortar: paste replacement versus cement replacement-
dc.typeArticle-
dc.identifier.emailKwan, AKH: khkwan@hkucc.hku.hk-
dc.identifier.authorityKwan, AKH=rp00127-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1061/(ASCE)MT.1943-5533.0002794-
dc.identifier.scopuseid_2-s2.0-85065478493-
dc.identifier.hkuros305502-
dc.identifier.volume31-
dc.identifier.issue7-
dc.identifier.spagearticle no. 04019129-
dc.identifier.epagearticle no. 04019129-
dc.publisher.placeUnited States-

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