Balanced Mix Design for Surface Asphalt Mixtures: Fiber-Modified Mixtures

VDOT is in the process of implementing the use of Balanced Mix Design (BMD) as a means to improve asphalt mixture performance. Fibers are used to enhance the performance of asphalt mixtures (minimize rutting and cracking). Fibers provide additional tensile strength in the mixture and thus increases fatigue and fracture properties of the asphalt mixture. The Salem district has two pilot projects in the 2022 plant mix schedules that will pave sections with and without the inclusion of aramid fibers and with and without the use of BMD. The data collected from the pilots will be used to assess the potential benefits arising from the use of fiber in dense-graded mixtures, as well as the impact of fiber on the performance of BMD-designed mixtures. The objective of this project will be to document and benchmark the initial performance of asphalt mixtures that incorporate aramid fiber additives along with associated control mixtures not containing fibers. Additionally, the laboratory performance of the mixes will be determined.

Language

• English

Project

• Status: Active
• Funding: $130071
• Contract Numbers:

  122349

• Sponsor Organizations:

  Virginia Transportation Research Council

  530 Edgemont Road
  Charlottesville, VA  United States  22903
• Performing Organizations:

  Virginia Transportation Research Council

  530 Edgemont Road
  Charlottesville, VA  United States  22903
• Principal Investigators:

  Nair, Harikrishnan

  Diefenderfer, Stacey

• Start Date: 20220912
• Expected Completion Date: 20231231
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Fiber reinforced materials; Mix design; Pavement performance; Tensile strength
• Geographic Terms: Salem (Virginia)
• Subject Areas: Highways; Maintenance and Preservation; Materials; Pavements;

Filing Info

• Accession Number: 01857294
• Record Type: Research project
• Source Agency: Virginia Department of Transportation
• Contract Numbers: 122349
• Files: RIP, STATEDOT
• Created Date: Sep 8 2022 9:33AM