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Influence of laboratory aggregate compaction method on the particle packing of stone mastic asphalt

2020-10-30Journal article Restricted access
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dc.contributor.authorBorges Miranda, Henrique
dc.contributor.authorBatista, Fátima Alexandra
dc.contributor.authorAntunes, Maria de Lurdes
dc.contributor.authorNeves, José
dc.date.accessioned2020-11-24T16:27:28Z
dc.date.available2020-11-24T16:27:28Z
dc.date.issued2020-10-30
dc.description.abstractThe type of aggregates and their packing characteristics under compaction are key factors for the design of asphalt mixtures with improved performance, namely, with respect to resistance to permanent deformation. A good example is Stone Mastic Asphalt (SMA), known by its stone-on-stone structure. In the U. S.A., the aggregate particles packing characteristics in a SMA, specially the stone-on-stone effect, are normally assessed using the "manually dry-rodded" method. However, this method may not be representative of field aggregate particle packing conditions, which may compromise the SMA performance. This article presents new findings regarding aggregate laboratory compaction methods to optimise the coarse aggregate structure in a SMA. Particle breakage, bulk density, air voids (compacted & uncompacted skeleton) in the aggregate / coarse aggregate were assessed for existing methods as well as for new methods using existing compactors, but with different procedures and/or specific devices, e.g. Proctor hammer. The assessed methods were: (1) "non-compaction"; (2) "manually dry-rodded" method; (3) established Proctor compaction; (4) modified Proctor compaction (light and heavy compaction) and (5) steel roller compaction. The 2 latter "new methods" aimed at mechanically simulating the dry-rodded method and the effect of field compactors, respectively. The results highlight that the new laboratory compaction methods developed with Proctor and steel roller compactor, provide a particle packing that is more representative of the field conditions, comparatively to other aggregate compaction methods.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMIRANDA, Henrique Manuel Borges; [et al] – Influence of laboratory aggregate compaction method on the particle packing of stone mastic asphalt. Construction and Building Materials. ISSN 0950-0618. Vol. 259 (2020), pp. 1-10pt_PT
dc.identifier.doi10.1016/j.conbuildmat.2020.119699pt_PT
dc.identifier.issn0950-0618
dc.identifier.issn1879-0526
dc.identifier.urihttp://hdl.handle.net/10400.21/12397
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttps://reader.elsevier.com/reader/sd/pii/S0950061820317049?token=7900E37DC5504136B1DAF0813F5A8F226B92940493E88D467B56CFF5719AEA0EECC70FF75B360CB91A23280EED1F734Bpt_PT
dc.subjectStone mastic asphaltpt_PT
dc.subjectParticle packingpt_PT
dc.subjectStone-on-stonept_PT
dc.subjectAggregate compaction methodspt_PT
dc.subjectAir voids in coarse aggregate mixturept_PT
dc.titleInfluence of laboratory aggregate compaction method on the particle packing of stone mastic asphaltpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage10pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleConstruction and Building Materialspt_PT
oaire.citation.volume259pt_PT
person.familyNameManuel Borges Miranda
person.familyNameBatista
person.familyNameAntunes
person.givenNameHenrique
person.givenNameFátima Alexandra
person.givenNameMaria de Lurdes
person.identifier.ciencia-id261A-EF78-78C8
person.identifier.ciencia-idAF1F-2243-AAEA
person.identifier.ciencia-idD317-F825-EAE6
person.identifier.orcid0000-0003-4062-1402
person.identifier.orcid0000-0001-7563-8744
person.identifier.orcid0000-0002-1911-517X
person.identifier.orcid0000-0002-7131-7967
person.identifier.ridA-7320-2013
person.identifier.scopus-author-id57190968137
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication16c000de-4f48-464a-abb0-0cb2c1a0c9e3
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relation.isAuthorOfPublication944d4886-844e-4200-ba26-12488c3e7a23
relation.isAuthorOfPublication.latestForDiscovery16c000de-4f48-464a-abb0-0cb2c1a0c9e3

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