Quantifying Benefits of Improved Compaction

Higher air voids in the mat, especially over longitudinal joints, lead to poor pavement durability. The problem is compounded as water infiltration increases through higher air void areas, leading to more required maintenance at longitudinal joint locations and possibly requiring earlier reconstruction of the pavement. Infiltration of moisture in higher air void joints also leads to reduced strength of underlying pavement layers which accelerates deterioration when the moisture undergoes freeze-thaw cycling in the pavement structure. To improve upon current asphalt pavement compaction practices in the state of Minnesota, the research team plans to create a database of historical data to quantify the effect of air void content on pavement performance from confined and unconfined joints. Improvements will come in the form of modification to current construction practices and/or new standard methods.


  • English


  • Status: Completed
  • Funding: $125,528.96
  • Contract Numbers:

    1003320 WO#5

  • Sponsor Organizations:

    Minnesota Department of Transportation

    395 John Ireland Boulevard
    St Paul, MN  United States  55155
  • Performing Organizations:

    Iowa State University, Ames

    Institute for Transportation
    2711 South Loop Drive, Suite 4700
    Ames, Iowa  United States  50010-8664
  • Principal Investigators:

    Williams, Chris

  • Start Date: 20180723
  • Expected Completion Date: 20211231
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01667964
  • Record Type: Research project
  • Source Agency: Minnesota Department of Transportation
  • Contract Numbers: 1003320 WO#5
  • Files: RIP, STATEDOT
  • Created Date: May 1 2018 4:03PM