LASS Incorporates the Third Dimension in Order to Improve the Accuracy of Rapid-Gradation Technology

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dc.creatorInternational Center for Aggregates Researchen
dc.date.accessioned2016-06-01T15:31:33Z
dc.date.available2016-06-01T15:31:33Z
dc.date.issued2004en
dc.description.abstract"Sophisticated asphalt designs, such as the Superpave specification, specify aggregate shape parameters like flatness and elongation ratios as an additional design variable. Conventional sieve analysis has drawbacks such as: poor efficiency and accuracy; labor intensiveness; time consumption; subjectivity; inability to measure shape parameters; and inability to measure irregularly shaped particles accurately. Although several rapid-gradation devices are currently on the market, their appropriateness and cost effectiveness for various applications in both the laboratory and in the field has yet to be determined. The research team evaluated five commercially available rapid gradations devices for accuracy and performance using fifteen aggregate test samples of various size, shape, and minerology. The project uses several methodologies in characterizing accuracy and studies two technologies in detail: digital-image analysis and laser profiling. The second part of the final project developed a laser scanning device for grading aggregates"en
dc.description.departmentCivil, Architectural, and Environmental Engineeringen
dc.description.sponsorshipAggregates Foundation for Technology, Research, and Education (AFTRE); the National Stone, Sand, and Gravel Association; funds from The University of Texas at Austin and Texas A&M University; and contributions from the aggregates industry.en
dc.identifierdoi:10.15781/T2513TV7Men
dc.identifier.urihttp://hdl.handle.net/2152/37826en
dc.language.isoengen
dc.publisherInternational Center for Aggregates Researchen
dc.relation.ispartofICAR Project Summariesen
dc.relation.ispartofseriesSummary Report (ICAR);503-1en
dc.rights.restrictionOpenen
dc.subjectAggregatesen
dc.titleLASS Incorporates the Third Dimension in Order to Improve the Accuracy of Rapid-Gradation Technologyen
dc.typeArticleen

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