Precision, Bias, and Accuracy of Simultaneous Dielectric and Roughness Profiling

The Contractor will conduct the following tasks for two projects. Each project will be conducted with repeat measurements and statistical analysis over two 1-week projects. The first project will be to MnRoad, and the second to a highway construction site near Minneapolis. A. Assess if simultaneous dielectric profiling and roughness measurements are feasible for routine pavement evaluation. The work will consist of in-person data collection, generation of data profiles specified in this document, and resulting statistical analysis. B. Conduct field surveys of asphalt pavement located at the Minnesota Road Research Facility (MnROAD) and a construction site location. The data will consist of dielectric profiling system (DPS) and roughness measurements simultaneously using a vehicle mounted system. C. At each site, run 30 repeat lines along the same profile resulting in a right, center, and left centerline offsets. D. Make arrangements for repeated measurements to ensure spatial repeatability such as a vehicle camera or other. E. Collect and record at least 10 lines of data for at least 3 sensors for 3 unique sensor offsets (right, center, and left). F. Record sensor dielectric readings using a reference standard before and after running each set of 10 lines to evaluate absolute sensor drift. G. Examine data analysis of dielectric readings for concordance correlation between repeat sensor runs with the same scan head and with different scan heads. The coverage probability must be calculated for collecting data within the accuracy specified by AASHTO PP 98-19. H. Conduct a similar statistical analysis to examine the difference between scanner dielectric readings and the reference standard value. Data analysis of surface profile readings gathered from the same sensor heads must be conducted with calculated values of international roughness index (IRI) evaluated using concordance correlation, coverage probability, and AASHTO PP 56-08 also.

  • Supplemental Notes:
    • TPF-5(443)


  • English


  • Status: Active
  • Funding: $41100
  • Contract Numbers:


  • Sponsor Organizations:

    Minnesota Department of Transportation

    395 John Ireland Boulevard
    St Paul, MN  United States  55155
  • Principal Investigators:

    Oden, Charles

  • Start Date: 20230519
  • Expected Completion Date: 20240131
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01883315
  • Record Type: Research project
  • Source Agency: Minnesota Department of Transportation
  • Contract Numbers: 1052738
  • Files: RIP, STATEDOT
  • Created Date: May 23 2023 2:21PM