Role of Aggregate Characteristics to Load in SMA

dc.creatorGatchalian, Dennisen
dc.creatorMasad, Eyaden
dc.creatorChowdhury, Arifen
dc.creatorLittle, Dallas N.en
dc.date.accessioned2016-05-12T20:03:01Z
dc.date.available2016-05-12T20:03:01Z
dc.date.issued2006-08en
dc.description.abstractStone matrix asphalt (SMA) mixtures rely on stone-on-stone contacts among particles to resist applied forces and permanent deformation. Aggregates in SMA should resist degradation (fracture and abrasion) under high stresses at the contact points. This study utilizes conventional techniques as well as advanced imaging techniques to evaluate aggregate characteristics and their resistance to degradation. Aggregates from different sources and types with various shape characteristics were used in this study. The Micro-Deval test was used to measure aggregate resistance to abrasion. The aggregate imaging system (AIMS) was then used to examine the changes in aggregate characteristics caused by abrasion forces in the Micro-Deval. The resistance of aggregates to degradation in SMA was evaluated through the analysis of aggregate gradation before and after compaction using conventional mechanical sieve analysis and nondestructive X-ray computed tomography (CT). The findings of this study led to the development of an approach for the evaluation of aggregate resistance to degradation in SMA. This approach measures aggregate degradation in terms of abrasion, breakage, and loss of texture.en
dc.description.departmentCivil, Architectural, and Environmental Engineeringen
dc.description.sponsorshipAggregates Foundation for Technology, Research, and Education (AFTRE)en
dc.identifierdoi:10.15781/T2382Hen
dc.identifier.urihttp://hdl.handle.net/2152/35445en
dc.language.isoengen
dc.relation.ispartofICAR Technical Reportsen
dc.rights.restrictionOpenen
dc.subjectAbrasionen
dc.subjectAbrasion resistanceen
dc.subjectAggregate gradationen
dc.subjectAggregatesen
dc.subjectAsphalt mixturesen
dc.subjectCompactionen
dc.subjectDeformationen
dc.subjectImageryen
dc.subjectSieve analysisen
dc.subjectStone matrix asphalten
dc.subjectTomographyen
dc.subjectX ray analysisen
dc.titleRole of Aggregate Characteristics to Load in SMAen
dc.title.alternativeCharacterization of Aggregate Resistance to Degradation in Stone Matrix Asphalt Mixtures, Research Report 204-1Fen
dc.typeTechnical reporten

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