Evaluation of AC Binder Testing Results for Sensitivity to Kentucky Ideal-CT Test Results

Kentucky Transportation Cabinet (KYTC) recently introduced specifications for PG64-22 bituminous mix designs that are required to meet Ideal-CT and Hamburg values. The Cabinet is currently developing Ideal-CT and Hamburg values for PG76-22 bituminous mix designs. Since the introduction of the Ideal-CT and Hamburg mix design requirements, practitioners have observed that asphalt binder sources of the same grade may influence IDEAL-CT and Hamburg test results. Testing has found that different asphalt binder sources — holding other mix design parameters constant — yield different IDEAL-CT values. Updated specifications will improve pavement performance and lengthen the time between rehabilitations.

Language

• English

Project

• Status: Active
• Funding: $170000
• Contract Numbers:

  KYSPR-25-664

• Sponsor Organizations:

  Kentucky Transportation Cabinet

  200 Mero Street
  Frankfort, KY  United States  40622
• Performing Organizations:

  University of Kentucky, Lexington

  Kentucky Transportation Center College of Engineering, 176 Raymond Building
  Lexington, KY  United States  40506-0281
• Principal Investigators:

  Li, Ying

• Start Date: 20240701
• Expected Completion Date: 20260630
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Bituminous binders; Bituminous mixtures; Mix design; Specifications
• Geographic Terms: Kentucky
• Subject Areas: Design; Highways; Materials; Pavements;

Filing Info

• Accession Number: 01926970
• Record Type: Research project
• Source Agency: University of Kentucky, Lexington
• Contract Numbers: KYSPR-25-664
• Files: RIP, STATEDOT
• Created Date: Aug 12 2024 1:26PM