Rolling Density Meter to Ensure Long Term Performance of Flexible Pavements

Proper compaction of asphalt mixtures remains a key factor in achieving long term pavement performance. Traditional localized spot density tests provides little testing coverage resulting in high producer and consumer risks; such testing also can miss localized defect areas which eventually govern the pavement life. This project will employ a rolling density meter to collect measurements at 6 inch spacing over newly constructed asphalt mixtures focusing on two applications: full lane testing coverage, and longitudinal joint density. With the advent of thin and ultra-thin mixtures, rolling density meter technology will provide much value since traditional coring can prove difficult with thin lifts. The research team will analyze the precision of the rolling density meter, perform an initial accuracy evaluation, shadow test the rolling density meter on construction projects and compare results to the traditional method using calibration core reference values. Additionally, the research team will evaluate a new license-free non-nuclear (does not require radioactive materials licensing) density gauge and perform limited evaluation of an emerging 32 channel rolling density meter.

Language

  • English

Project

  • Status: Completed
  • Funding: $360684
  • Contract Numbers:

    0-6889

  • Sponsor Organizations:

    Texas Department of Transportation

    125 E. 11th Street
    Austin, TX  United States  78701-2483
  • Project Managers:

    Adams, Joe

  • Performing Organizations:

    Texas A&M Transportation Institute, College Station

    Texas A&M University System
    3135 TAMU
    College Station, TX  United States  77843-3135
  • Principal Investigators:

    Sebesta, Stephen

  • Start Date: 20150901
  • Expected Completion Date: 20171231
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01619653
  • Record Type: Research project
  • Source Agency: Texas Department of Transportation
  • Contract Numbers: 0-6889
  • Files: RiP, STATEDOT
  • Created Date: Dec 21 2016 3:13PM