Using high-speed texture measurements to improve the uniformity of hot-mix asphalt

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dc.contributorVirginia Transportation Research Councilen
dc.contributorVirginia Techen
dc.contributor.authorMcGhee, Kevin K.en
dc.contributor.authorFlintsch, Gerardo W.en
dc.contributor.authorde León Izeppi, Edgaren
dc.contributor.departmentCivil and Environmental Engineeringen
dc.contributor.departmentVirginia Tech Transportation Instituteen
dc.date.accessed2013-11-21en
dc.date.accessioned2014-03-19T18:30:21Zen
dc.date.available2014-03-19T18:30:21Zen
dc.date.issued2003-05-01en
dc.description.abstractThis study introduces Virginia's efforts to apply high-speed texture measurement as a tool to improve the uniformity of hot-mix asphalt (HMA) pavements. Three approaches for detecting and quantifying HMA segregation through measuring pavement surface macrotexture were evaluated: (1) applying the methods proposed in NCHRP Report 441, which build on the ability to predict the expected "non-segregated" macrotexture; (2) using acceptance bands for texture similar to those used for HMA density; and (3) considering the standard deviation of the macrotexture as a measure of construction uniformity. Based on the findings from a series of field tests, the researchers concluded that macrotexture measurement holds great promise as a tool to detect and quantify segregation for quality assurance purposes. None of the available equations for predicting non-segregated macrotexture (the approach in NCHRP Report 441) was found to work for all the construction projects evaluated. Additional information is necessary to establish target macrotexture levels. The acceptance bands approach produced reasonable results in most of the field-verification experiments, but it was significantly influenced by the actual variability within the section. An approach that used target levels of standard deviations was selected for further testing and implementation on a pilot basis.en
dc.description.sponsorshipVirginia Department of Transportationen
dc.format.extent32 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationKevin K. McGhee, P.E., Gerardo W. Flintsch, Ph.D., P.E., Edgar de Leon Izeppi. "Using High-Speed Texture Measurements to Improve the Uniformity of Hot-Mix Asphalt," Virginia Transportation Research Council 530 Edgemont Road Charlottesville, VA 22903, Report No. VTRC 03-R12, May 2003.en
dc.identifier.govdocVTRC 03-R12en
dc.identifier.urihttp://hdl.handle.net/10919/46709en
dc.identifier.urlhttp://www.virginiadot.org/vtrc/main/online_reports/pdf/03-r12.pdfen
dc.language.isoenen
dc.publisherVirginia Center for Transportation Innovation and Researchen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.titleUsing high-speed texture measurements to improve the uniformity of hot-mix asphalten
dc.typeTechnical reporten
dc.type.dcmitypeTexten

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