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Effect of the maturity of recycled aggregates on the mechanical properties and autogenous and drying shrinkage of high-performance concrete

2021-09-13Journal article Restricted access
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dc.contributor.authorRevilla-Cuesta, V.
dc.contributor.authorEvangelista, Luis
dc.contributor.authorBrito, Jorge de
dc.contributor.authorOrtega-López, Vanesa
dc.contributor.authorManso, Juan M.
dc.date.accessioned2021-09-24T10:11:34Z
dc.date.available2021-09-24T10:11:34Z
dc.date.issued2021-09-13
dc.description.abstractThe high cement content of high-performance concrete (HPC) results in improved strength, but also in large shrinkage. The substitution of natural aggregates (NA) with recycled aggregates (RA) notably affects these properties in conventional concrete. This study intends to analyse the effect of the content of RA and their maturity (time elapsed between casting and crushing of the parent concrete from which RA are obtained) on these properties of HPC. To this end, five mixes were manufactured with 0%, 25%, and 100% of coarse and fine RA of different maturities, 7 days (early-age RA) and 6 months (matured RA). The mechanical properties and the autogenous, drying, and total shrinkage of all mixes were determined. Both the increase of RA content and the lower stiffness and strength of early-age RA relative to matured RA worsened the mechanical behaviour of HPC. Regarding shrinkage, the lower stiffness and higher water absorption of matured RA compared to NA decreased autogenous shrinkage by 20%, but increased drying and total shrinkage. The lower stiffness of early-age RA and their shrinkage amplified all types of shrinkage of HPC around 10-20%. Nevertheless, the hydration of their unhydrated cement particles during the mixing process reduced those increases from what was expected. Total shrinkage of early-age recycled aggregate HPC could be estimated from the shrinkage of both a HPC mix of identical composition but with matured RA and the parent concrete. Overall, it can be concluded that RA's maturity affects the mechanical performance and, especially, the shrinkage of HPC, so it should be considered when using this type of aggregate.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationREVILLA-CUESTA, Victor; [et al] – Effect of the maturity of recycled aggregates on the mechanical properties and autogenous and drying shrinkage of high-performance concrete. Construction and Building Materials. ISSN 0950-0618. Vol. 299 (2021), pp. 1-20pt_PT
dc.identifier.doi10.1016/j.conbuildmat.2021.124001pt_PT
dc.identifier.issn0950-0618
dc.identifier.issn1879-0526
dc.identifier.urihttp://hdl.handle.net/10400.21/13792
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisher1pt_PT
dc.relationFPU17/03374 - European Commissionpt_PT
dc.relationEST19/00263 - European Commissionpt_PT
dc.relationUIC231 - Junta de Castilla y Leonpt_PT
dc.relationY135.GI - University of Burgospt_PT
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S095006182101761X?via%3Dihubpt_PT
dc.subjectHigh-performance concretept_PT
dc.subjectRecycled aggregatespt_PT
dc.subjectRecycled aggregate's maturitypt_PT
dc.subjectMechanical behaviourpt_PT
dc.subjectAutogenous shrinkagept_PT
dc.subjectDrying shrinkagept_PT
dc.titleEffect of the maturity of recycled aggregates on the mechanical properties and autogenous and drying shrinkage of high-performance concretept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage20pt_PT
oaire.citation.titleConstruction and Building Materialspt_PT
oaire.citation.volume299pt_PT
person.familyNameRevilla-Cuesta
person.familyNameFaria Rocha Evangelista
person.familyNameCaliço Lopes de Brito
person.familyNameOrtega-López
person.givenNameVictor
person.givenNameLuís Manuel
person.givenNameJorge Manuel
person.givenNameVanesa
person.identifierB-9864-2011
person.identifierA-4299-2008
person.identifier.ciencia-idA612-1A5B-D93D
person.identifier.ciencia-id921D-3921-8308
person.identifier.orcid0000-0003-3337-6250
person.identifier.orcid0000-0001-8406-6864
person.identifier.orcid0000-0001-6766-2736
person.identifier.orcid0000-0003-0212-355X
person.identifier.ridJ-6597-2017
person.identifier.scopus-author-id57211515349
person.identifier.scopus-author-id57201241744
person.identifier.scopus-author-id7003285554
person.identifier.scopus-author-id51565854300
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication86f0b565-b85c-42f2-9922-d8565e7a2ebf
relation.isAuthorOfPublication8463f3f2-8bac-44bf-82af-6d46db906c73
relation.isAuthorOfPublicationebc80e57-531a-4fe5-ac87-4d8382b7de2e
relation.isAuthorOfPublication89d00b3d-71ad-40d7-aa07-40d31b4cf743
relation.isAuthorOfPublication.latestForDiscoveryebc80e57-531a-4fe5-ac87-4d8382b7de2e

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