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The effect of multi-recycling on the mechanical performance of coarse recycled aggregates concrete

2018-11-10Journal article Restricted access
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dc.contributor.authorAbreu, Vilson
dc.contributor.authorEvangelista, Luis
dc.contributor.authorDe Brito, Jorge
dc.date.accessioned2018-11-27T11:02:27Z
dc.date.available2018-11-27T11:02:27Z
dc.date.issued2018-11-10
dc.description.abstractThis paper presents the mechanical performance results obtained to evaluate the effect of incorporating coarse recycled aggregates from various recycling cycles. These aggregates were obtained from crushing elements of concrete of controlled origin, which were mixed to have the same performance in each cycle. The specific purpose was to study the mechanical performance of concrete designed with incorporation of coarse recycled aggregates from three successive recycling cycles at two replacement ratios, 25% and 100%, comparing it with that of a reference concrete, a mix with the same composition but where all aggregates are natural. An experimental campaign was carried out: to obtain all the necessary coarse recycled aggregates; to produce the concrete mixes that were the source of the recycled coarse aggregates; to produce the concrete mixes that were studied and; to perform all the necessary tests to evaluate the mechanical properties of these concrete mixes. Compressive strength, modulus of elasticity, tensile strength and abrasion resistance were tested. The results prove that, with the increase of the number of recycling cycles of the coarse aggregates, there is a decrease of its quality that affects the mechanical performance of concrete. That mechanical performance decreases asymptotically with the number of recycling cycles, tending towards a final value representative of the property’s stabilization, and linearly with the increase in the ratio of incorporation of recycled coarse aggregates. It is concluded that, by knowing the final value, concrete with incorporation of coarse recycled aggregates from any recycling cycle can be designed for the most diverse applications with a good safety level.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationABREU, Vilson; EVANGELISTA, Luís; BRITO, Jorge de – The effect of multi-recycling on the mechanical performance of coarse recycled aggregates concrete. Construction and Building Materials. ISSN 0950-0618. Vol. 188 (2018), pp. 480-489pt_PT
dc.identifier.doihttps://doi.org/10.1016/j.conbuildmat.2018.07.178pt_PT
dc.identifier.issn0950-0618
dc.identifier.issn1879-0526
dc.identifier.urihttp://hdl.handle.net/10400.21/9087
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttps://reader.elsevier.com/reader/sd/pii/S0950061818318506?token=DD03FB2CD90E8686855AA12729A0250A3555DD0F21C888730C6586FB9631B1645F55ED9A1608957E0B8633B0E142C064pt_PT
dc.subjectConcretept_PT
dc.subjectRecycled aggregatespt_PT
dc.subjectElasticitypt_PT
dc.subjectTensile strengthpt_PT
dc.subjectAbrasion resistancept_PT
dc.subjectCimentopt_PT
dc.subjectReciclagem de agregadopt_PT
dc.subjectElasticidadept_PT
dc.subjectResistência ao desgastept_PT
dc.titleThe effect of multi-recycling on the mechanical performance of coarse recycled aggregates concretept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage489pt_PT
oaire.citation.startPage480pt_PT
oaire.citation.titleConstruction and Building Materialspt_PT
oaire.citation.volume188pt_PT
person.familyNameFaria Rocha Evangelista
person.familyNameCaliço Lopes de Brito
person.givenNameLuís Manuel
person.givenNameJorge Manuel
person.identifierB-9864-2011
person.identifierA-4299-2008
person.identifier.ciencia-idA612-1A5B-D93D
person.identifier.ciencia-id921D-3921-8308
person.identifier.orcid0000-0001-8406-6864
person.identifier.orcid0000-0001-6766-2736
person.identifier.scopus-author-id57201241744
person.identifier.scopus-author-id7003285554
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication8463f3f2-8bac-44bf-82af-6d46db906c73
relation.isAuthorOfPublicationebc80e57-531a-4fe5-ac87-4d8382b7de2e
relation.isAuthorOfPublication.latestForDiscoveryebc80e57-531a-4fe5-ac87-4d8382b7de2e

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