TRC2201 - Update to ARDOT Superpave Gyratory Compaction (SGC) Specification to Increase Pavement Durability

The overall objective of the proposed research is to increase the durability of asphalt pavements. This study proposes to evaluate current mix designs for surface asphalt concrete hot-mix (ACHM) used around the State of Arkansas when reducing the number of design gyrations (Ndes) and examine its effect(s) on change in mixture durability (rutting and cracking performance). In particular, the key is to assure that the mixtures produced with reduced Ndes will have sufficient asphalt binder content to provide enhanced long-term cracking performance in conjunction with maintaining adequate aggregate structure to resist the permanent deformation (rutting) in the field for a given traffic level. Increasing the durability of asphalt pavements will result in both a reduction in the extent of necessary maintenance, preservation, and rehabilitation efforts/costs, and in a longer pavement life which will significantly reduce life-cycle costs of pavements. Also, the proposed study is the next logical step in fully implementing a performance engineered mixture design (PEMD) system for Arkansas.

Language

• English

Project

• Status: Active
• Funding: $237,093
• Sponsor Organizations:

  Arkansas Department of Transportation

  P O Box 2261
  Little Rock, AR  United States  72203

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Managing Organizations:

  Arkansas Department of Transportation

  P O Box 2261
  Little Rock, AR  United States  72203
• Project Managers:

  Chun, Sanghyun

• Performing Organizations:

  University of Arkansas, Fayetteville

  4190 Bell Engineering
  Civil Engineering
  Fayetteville, Arkansas  United States  72701
• Principal Investigators:

  Braham, Andrew

  Hall, Kevin

• Start Date: 20220328
• Expected Completion Date: 20231231
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Asphalt pavements; Durability; Hot mix asphalt; Mix design; Pavement performance
• Geographic Terms: Arkansas
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 01829890
• Record Type: Research project
• Source Agency: Arkansas Department of Transportation
• Files: RIP, STATEDOT
• Created Date: Dec 13 2021 5:34PM