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Improvement of the quality of recycled concrete aggregate subjected to chemical treatments: a review

2022-04-08Journal article Open access
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dc.contributor.authorForero, Javier A.
dc.contributor.authorDe Brito, Jorge
dc.contributor.authorEvangelista, Luis
dc.contributor.authorPereira, Cláudio
dc.date.accessioned2022-06-01T11:19:27Z
dc.date.available2022-06-01T11:19:27Z
dc.date.issued2022-04-08
dc.description.abstractThe main factor that alters the quality of recycled concrete aggregate (RCA) is the paste adhered to the natural aggregate (NA). Since it causes weakening of the interfacial transition zone (ITZ) between the aggregate and the cementitious paste, it becomes a determining factor for the mechanical behavior of concrete. It turns out that it is critical to enhance this interface by improving the surface of the aggregate or by removing the paste adhered to the NA. Considering the variety of methods for removing paste adhered to RCA-namely using acids such as hydrochloric acid (HCl), sulfuric acid (H2SO4), and phosphoric acid (H3PO4), among others-this paper presents a review of treatments for the removal of adhered paste using acidic solutions on the RCA, and their influence on the mechanical properties and durability of concrete produced with RCA. Pearson's correlation was used in the statistical analysis to determine the linear relationship of the main factors-for instance, immersion time, acidic solution, and aggregate size-involved in the removal of the paste in the RCA.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationFORERO, Javier A.; [et al] – Improvement of the quality of recycled concrete aggregate subjected to chemical treatments: a review. Materials. eISSN 1996-1944. Vol. 15, N.º 8 (2022), pp. 1-20.pt_PT
dc.identifier.doi10.3390/ma15082740pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.21/14680
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relation.publisherversionhttps://www.mdpi.com/1996-1944/15/8/2740pt_PT
dc.subjectMortarpt_PT
dc.subjectPre-soaking treatmentpt_PT
dc.subjectRecycled concrete aggregatept_PT
dc.subjectTreatmentpt_PT
dc.subjectAggregate qualitypt_PT
dc.titleImprovement of the quality of recycled concrete aggregate subjected to chemical treatments: a reviewpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage20pt_PT
oaire.citation.issue8pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleMaterialspt_PT
oaire.citation.volume15pt_PT
person.familyNameCaliço Lopes de Brito
person.familyNameFaria Rocha Evangelista
person.givenNameJorge Manuel
person.givenNameLuís Manuel
person.identifierA-4299-2008
person.identifierB-9864-2011
person.identifier.ciencia-id921D-3921-8308
person.identifier.ciencia-idA612-1A5B-D93D
person.identifier.orcid0000-0001-6766-2736
person.identifier.orcid0000-0001-8406-6864
person.identifier.scopus-author-id7003285554
person.identifier.scopus-author-id57201241744
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationebc80e57-531a-4fe5-ac87-4d8382b7de2e
relation.isAuthorOfPublication8463f3f2-8bac-44bf-82af-6d46db906c73
relation.isAuthorOfPublication.latestForDiscoveryebc80e57-531a-4fe5-ac87-4d8382b7de2e

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