A Working Review of Available Non-Nuclear Equipment for Determining In-Place Density of Asphalt

Current non-nuclear methods of measuring asphalt pavement density use electrical properties of asphalt. Two known instruments, the PaveTracker™ and the PQI Model 300, estimate pavement density by inferring the relative proportion of air-filled voids in the asphalt from a measure of dielectric permittivity. Under this project, currently available and new methods of determining in-place asphalt density were investigated. The investigation included a laboratory study of the PaveTracker™’s ability to accurately measure density under a variety of conditions, including coarse or fine aggregate in mix, presence of internal and/or surface moisture, sample area, and sample depth. Both the PaveTracker™ and the PQI Model 300 were evaluated in the field by measuring density of measurement locations at each of 24 project sites and comparing to corresponding values measured by a nuclear gauge and laboratory tests. Recommendations for practice, including expected payoff results in using them, are given.

• Record URL:
  http://digitalarchive.oclc.org/request?id%3Doclcnum%3A64663864
• Corporate Authors:

  Ohio University, Athens

  Ohio Research Institute for Transportation and the Environment
  141 Stocker Engineering and Technology Center
  Athens, OH  United States  45701-2979

  Ohio Department of Transportation

  Office of Research and Development
  1980 West Broad Street
  Columbus, OH  United States  43223

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Sargand, Shad M
  • Kim, Sang-Soo
  • Farrington, Stephen P
• Publication Date: 2005-12

Language

• English

Media Info

• Media Type: Web
• Edition: Final Technical Report
• Features: Appendices; Figures; Photos; Tables;
• Pagination: 64p

Subject/Index Terms

• TRT Terms: Air voids; Asphalt pavements; Coarse aggregates; Density; Electrical properties; Fine aggregates; Laboratory studies; Nuclear density gauges
• Identifier Terms: PaveTracker; PQI Model 300
• Uncontrolled Terms: Dielectric permittivity; In-place asphalt density; Non-nuclear density gages; Surface moisture
• Subject Areas: Highways; Materials; Pavements; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01024457
• Record Type: Publication
• Report/Paper Numbers: FHWA/OH-2005/18
• Contract Numbers: State Job No. 147960
• Files: TRIS, ATRI, USDOT, STATEDOT
• Created Date: May 22 2006 11:34AM