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The effect of superplasticizers on the workability and compressive strength of concrete made with fine recycled concrete aggregates

2012-03Journal article Restricted access
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dc.contributor.authorPereira, P.
dc.contributor.authorEvangelista, Luis
dc.contributor.authorDe Brito, Jorge
dc.date.accessioned2015-09-07T08:58:54Z
dc.date.available2015-09-07T08:58:54Z
dc.date.issued2012-03
dc.description.abstractThe reuse of structural concrete elements to produce new concrete aggregates is accepted as an alternative to dumping them and is favourable to the sustainability of natural reserves. Even though the construction sector is familiar with the use of coarse recycled concrete aggregates, the recycled concrete fines are classified as less noble resources. This research sets out to limit the disadvantages associated with the performance of concrete containing fine recycled concrete aggregates through the use of superplasticisers. Two types of latest generation superplasticisers were used that differ in terms of water reduction capacity and robustness, and the workability, density and compressive strength of each of the compositions analysed were then compared: a reference concrete, with no plasticisers, and concrete mixes with the superplasticisers. For each concrete family mixes with 0%, 10%, 30%, 50% and 100% replacement ratios of fine natural aggregates (FNA) by fine recycled concrete aggregates (FRA) were analysed. Concrete with incorporation of recycled aggregates was found to have poorer relative performance. The mechanical performance of concrete with recycled aggregates and superplasticisers was generally superior to that of the reference concrete with no admixtures and of conventional concrete with lower performance superplasticisers.por
dc.identifier.citationPEREIRA, P.; EVANGELISTA, L.; BRITO, J. de - The effect of superplasticizers on the workability and compressive strength of concrete made with fine recycled concrete aggregates. Construction and Building Materials. ISSN: 0950-0618. Vol. 28, N.º 1 (2012), pp. 722-729.por
dc.identifier.doi10.1016/j.conbuildmat.2011.10.050
dc.identifier.issn0950-0618
dc.identifier.urihttp://hdl.handle.net/10400.21/5060
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevier SCIpor
dc.relationICIST Research Institute, IST, Technical University of Lisbon
dc.relationFCT - Foundation for Science and Technology
dc.subjectRecycled aggregatespor
dc.subjectSuperplasticiserspor
dc.subjectConcretepor
dc.subjectCompressive strengthpor
dc.titleThe effect of superplasticizers on the workability and compressive strength of concrete made with fine recycled concrete aggregatespor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceOxon
oaire.citation.endPage729por
oaire.citation.issue1por
oaire.citation.startPage722por
oaire.citation.titleConstruction and Building Materialspor
oaire.citation.volume28por
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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