2501 Evaluate the Performance and Consistency of BMD Mixes during Production using Rheological and Chemical Binder Testing

This project is part of an ongoing plan by Oklahoma Department of Transportation (ODOT) to implement Balanced Mix Design (BMD) and to promote asphalt recycling. The overall objective of this study is to build on the findings of previous studies conducted by ODOT, and to provide more insight into the performance and variability of BMD mixes, which will guide ODOT in its efforts to develop specifications for BMD. The specific objectives that will be addressed in this proposal are: Quantify the variability of BMD mixes during production using mixture and binder testing, including mixes from different asphalt plants, and constituting a wide variety of local materials and mix designs. Identify test methods that are appropriate to use to assess the variability of mixes, focusing on cracking, rutting, and binder rheological and chemical properties. The test methods will be evaluated based on their ability to capture the variability during production. The analysis will also include studying correlations between binder testing and mixture testing. Guidelines will be developed to evaluate the impact of variability on mix production and how to incorporate the variability into mix acceptance specifications. A statistical approach to incorporate the variability in mix acceptance specifications will be specified, including methods such as percent within limits (PWL), to ensure mix consistency during production.

Language

• English

Project

• Status: Active
• Funding: $299,866.00
• Contract Numbers:

  2501

  SPRY-0010(097)RS

• Sponsor Organizations:

  Oklahoma Department of Transportation

  200 NE 21st Street
  Oklahoma City, OK  United States  73105
• Managing Organizations:

  Oklahoma Department of Transportation

  200 NE 21st Street
  Oklahoma City, OK  United States  73105
• Project Managers:

  Vivanco Sala, David

  Rice, Jerry

• Performing Organizations:

  Oklahoma State University, Stillwater

  School of Civil and Environmental Engineering
  Stillwater, OK  United States  74078
• Principal Investigators:

  Elkashef, Mohamed

• Start Date: 20251001
• Expected Completion Date: 20270930
• Actual Completion Date: 0
• USDOT Program: Transportation, Planning, Research, and Development

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Binders; Cracking; Mix design; Rheological properties; Rutting; Test procedures
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 01967870
• Record Type: Research project
• Source Agency: Oklahoma Department of Transportation
• Contract Numbers: 2501, SPRY-0010(097)RS
• Files: RIP, STATEDOT
• Created Date: Oct 3 2025 11:08AM