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The effect of superplasticizers on the mechanical performance of concrete made with fine recycled concrete aggregates

2012-10Artigo científico Acesso restrito
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dc.contributor.authorPereira, P.
dc.contributor.authorEvangelista, Luis
dc.contributor.authorDe Brito, Jorge
dc.date.accessioned2015-09-07T08:54:26Z
dc.date.available2015-09-07T08:54:26Z
dc.date.issued2012-10
dc.description.abstractIt is considered that using crushed recycled concrete as aggregate for concrete production is a viable alternative to dumping and would help to conserve abiotic resources. This use has fundamentally been based on the coarse fraction because the fine fraction is likely to degrade the performance of the resulting concrete. This paper presents results from a research work undertaken at Institut Superior Tecnico (IST), Lisbon, Portugal, in which the effects of incorporating two types of superplasticizer on the mechanical performance of concrete containing fine recycled aggregate were evaluated. The purpose was to see if the addition of superplasticizer would offset the detrimental effects associated with the use of fine recycled concrete aggregate. The experimental programme is described and the results of tests for splitting tensile strength, modulus of elasticity and abrasion resistance are presented. The relative performance of concrete made with recycled aggregate was found to decrease. However, the same concrete with admixtures in general exhibited a better mechanical performance than the reference mixes without admixtures or with a less active superplasticizer. Therefore, it is argued that the mechanical performance of concrete made with fine recycled concrete aggregates can be as good as that of conventional concrete, if superplasticizers are used to reduce the water-cement ratio of the former concrete.por
dc.identifier.citationPEREIRA, P.; EVANGELISTA, L.; BRITO, J. de – The effect of superplasticizers on the mechanical performance of concrete made with fine recycled concrete aggregates. Cement & Concrete Composites. ISSN 0958-9465. Vol. 34, N.º 9 (2012), pp. 1044-1052.por
dc.identifier.doi10.1016/j.cemconcomp.2012.06.009
dc.identifier.issn0958-9465
dc.identifier.urihttp://hdl.handle.net/10400.21/5059
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevier Sci LTDpor
dc.relationICIST Research Institute
dc.relationIST
dc.relationTechnical University of Lisbon
dc.relationFCT - Foundation for Science and Technology
dc.subjectFine recycled aggregatepor
dc.subjectSuperplasticizerspor
dc.subjectConcretepor
dc.subjectTensile strengthpor
dc.subjectModulus of elasticitypor
dc.subjectBehavior
dc.titleThe effect of superplasticizers on the mechanical performance of concrete made with fine recycled concrete aggregatespor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceOxon
oaire.citation.endPage1052por
oaire.citation.issue9
oaire.citation.startPage1044por
oaire.citation.titleCement & Concrete Compositespor
oaire.citation.volume34por
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.rightsclosedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication8463f3f2-8bac-44bf-82af-6d46db906c73
relation.isAuthorOfPublicationebc80e57-531a-4fe5-ac87-4d8382b7de2e
relation.isAuthorOfPublication.latestForDiscoveryebc80e57-531a-4fe5-ac87-4d8382b7de2e

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