About the research
The objectives of the current research are as follows:
- Summarize existing mix design requirements for high traffic (HT) hot-mix asphalt (HMA) mixtures in regions with similar climates (“Wet-Freeze”) and aggregate resources to Wisconsin. Identify potential areas of concern and/or improvement.
- Benchmark existing Wisconsin Department of Transportation (WisDOT) HT mixture designs using volumetric and performance testing; proposed testing must include consideration of prior and ongoing HMA performance testing research.
- Propose modifications to existing HT mixture designs based on available data, benchmarking, and testing, and determine whether improvements to constructability and performance can be achieved using the proposed mix design procedure changes.