LTPP Data Analysis: Significance of As-Constructed Asphalt Pavement Air Voids to Pavement Performance

Research is needed to determine the effect of in-place air voids (i.e., density expressed as a percent of maximum theoretical density) on the performance of asphalt pavements through an analysis of field data from the Long-Term Pavement Performance (LTPP) program and other sources. The best evidence of the impact of in-place air voids on pavement performance comes from laboratory studies. The challenge will be to isolate the effect of in-place air voids from the other factors that can affect pavement performance. Interest in this subject is due to the perceived significance of in-place air voids on pavement performance, and to the fact that any cost associated with increased density during construction is much less than that of the maintenance, preservation, and rehabilitation needed to address reduced pavement life. The objective of this research was to determine the effect of in-place air voids on the performance of asphalt pavements using data from the LTPP program and other appropriate sources.

• Record URL:
  http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=4410

Language

• English

Project

• Status: Completed
• Funding: $450000
• Contract Numbers:

  Project 20-15(18)

• Sponsor Organizations:

  National Cooperative Highway Research Program

  Transportation Research Board
  500 Fifth Street, NW
  Washington, DC  United States  20001

  American Association of State Highway and Transportation Officials (AASHTO)

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

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Project Managers:

  Harrigan, Edward

• Performing Organizations:

  National Center for Asphalt Technology

  277 Technology Pkwy
  Auburn, AL  United States  36830
• Principal Investigators:

  Heitzman, Michael

• Start Date: 20180401
• Expected Completion Date: 20200630
• Actual Completion Date: 20200630
• Source Data: RiP Project 41740

Subject/Index Terms

• TRT Terms: Admixtures; Air voids; Asphalt concrete; Compaction; Data analysis; Durability; Pavement performance; Road construction
• Identifier Terms: Long Term Pavement Performance (LTPP) Program
• Subject Areas: Construction; Highways; Maintenance and Preservation; Pavements;

Filing Info

• Accession Number: 01640229
• Record Type: Research project
• Source Agency: Transportation Research Board
• Contract Numbers: Project 20-15(18)
• Files: TRB, RiP
• Created Date: Jul 1 2017 3:34AM