Show simple item record

dc.creatorPark, Dae-Wooken
dc.creatorChowdhury, Arifen
dc.creatorButton, Joe W.en
dc.date.accessioned2016-05-12T14:57:36Z
dc.date.available2016-05-12T14:57:36Z
dc.date.issued2001-06en
dc.identifierdoi:10.15781/T2JN8Men
dc.identifier.urihttp://hdl.handle.net/2152/35395en
dc.description.abstractThe Superpave system adopted the voids in mineral aggregate (VMA) criteria developed by McLeod using the 75-blow Marshall compactor for conventional dense-graded hot mix asphalt (HMA) mixtures. This VMA criteria is a function of only the nominal size of aggregate regardless of shape, texture, or gradation. The Superpave volumetric mixture design process contains a required minimum value for fine aggregate angularity (FAA) as a function of traffic level and position of the layer within the pavement structure. This parameter is reported as the percentage of uncompacted air voids, with larger values generally indicating increased aggregate angularity and, thus, higher VMA and better resistance to permanent deformation. The purpose of this study was to evaluate the effects of FAA and gradation on the resulting VMA of certain HMA mixtures. The effect of FAA was evaluated using mixtures containing coarse limestone combined with six different fine aggregates. Mixtures with three gradations which pass through, above, and below the restricted zone; three different mineral filler contents; and four different values of FAA were analyzed to evaluate the effects of these parameters on VMA of Superpave mixtures. Based on analyses of these tests, mixtures containing fine granite or limestone showed less permanent deformation than mixtures containing fine river gravel or natural rounded sand. FAA values and permanent deformation did not correlate well. Gradations that pass through the restricted zone did not significantly affect mixture VMA. Mineral filler contents and FAA value did affect mixture VMA significantly. Higher FAA values yielded higher VMA.en
dc.description.sponsorshipAggregates Foundation for Technology, Research, and Education (AFTRE)en
dc.language.isoengen
dc.relation.ispartofICAR Technical Reportsen
dc.relation.ispartofseriesResearch Report (ICAR);201-3Fen
dc.subjectAggregate gradationen
dc.subjectAir voidsen
dc.subjectAngularityen
dc.subjectAsphalt mixturesen
dc.subjectCoarse aggregatesen
dc.subjectDeformationen
dc.subjectDense graded aggregatesen
dc.subjectFine aggregatesen
dc.subjectGraniteen
dc.subjectGravelen
dc.subjectHot mix asphalten
dc.subjectLimestoneen
dc.subjectMineral fillersen
dc.subjectRuttingen
dc.subjectSanden
dc.subjectSuperpaveen
dc.titleEffects of Aggregate Gradation and Angularity on VMA and Rutting Resistanceen
dc.typeTechnical reporten
dc.description.departmentCivil, Architectural, and Environmental Engineeringen
dc.rights.restrictionOpenen


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record