Precision Statements for AASHTO Standard Methods of Test

The objective of this research is to develop or update precision and bias statements for American Association of State Highway and Transportation Officials (AASHTO) standard test methods. Task Order #1 investigated specific sources of variability in AASHTO T 209, Theoretical Maximum Specific Gravity and Density of Hot Mix Asphalt (HMA), and quantified their effects on the precision of the method. In Task Order #2, precision statements for six AASHTO test methods are being updated through data mining and an interlaboratory study.


  • English


  • Status: Active
  • Funding: $746000.00
  • Contract Numbers:

    Project 10-87

  • Sponsor Organizations:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    American Association of State Highway & Transportation Officials (AASHTO)

    444 North Capitol Street, NW, Suite 225
    Washington, DC  United States  20001

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001
  • Project Managers:

    Harrigan, Edward

  • Performing Organizations:

    AASHTO Materials Reference Laboratory

    National Institute of Standards and Technology
    444 North Capitol Street, NW, Suite 249, Building 226, Room A365
    Gaithersburg, MD  United States  20899-
  • Principal Investigators:

    Azari, Haleh

  • Start Date: 20101007
  • Expected Completion Date: 0
  • Actual Completion Date: 0
  • Source Data: RiP Project 37938

Subject/Index Terms

Filing Info

  • Accession Number: 01545900
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 10-87
  • Files: TRB, RiP
  • Created Date: Nov 27 2014 1:00AM