Measuring Field Performance of High-Modified Hot-Mix Asphalt Material over Rubblized Base

High-modified hot-mix asphalt mixtures (High-Mod HMA) have the potential to transform the way pavements are designed, constructed, and maintained. Trial sections have demonstrated the ability of this mix to resist rutting, cracking, and maintain a state of good repair while significantly reducing the cost of construction. A new application of this mix is being planned in Utah. This application involves rubblizing the existing concrete pavement and applying a 6-inch-thick layer of High-Mod HMA on top. This transformative approach to pavement construction repurposes existing materials while leveraging it to provide support to the new structure. However, the design specifies a relatively thin HMA layer for an interstate highway section, making it essential to properly understand and verify its actual behavior to allow for potential nationwide implementation. The expectation for the system is that the rubblized base will provide sufficient stiffness to support the pavement structure, and despite the likelihood of high strains in the asphalt mixture, the high binder content and polymer modification in the new High-Mod HMA will produce a strain-tolerant system. This proposal seeks to measure actual strains and deformation in this pavement and use those values to verify design assumptions and improve the development of a transformative pavement systems.

Language

  • English

Project

  • Status: Active
  • Funding: $190000
  • Contract Numbers:

    69A3552348308

  • Sponsor Organizations:

    Office of the Assistant Secretary for Research and Technology

    University Transportation Centers Program
    Department of Transportation
    Washington, DC  United States  20590
  • Managing Organizations:

    Center for Transformative Infrastructure Preservation and Sustainability

    North Dakota State University
    Fargo, North Dakota  United States  58108-6050
  • Project Managers:

    Tolliver, Denver

  • Performing Organizations:

    University of Utah

    Department of Civil and Environmental Engineering
    110 Central Campus Drive Suite 2000
    Salt Lake City, UT  United States  84112
  • Principal Investigators:

    Romero, Pedro

  • Start Date: 20240915
  • Expected Completion Date: 20260914
  • Actual Completion Date: 0
  • USDOT Program: University Transportation Centers Program
  • Source Data: CTIPS-036

Subject/Index Terms

Filing Info

  • Accession Number: 01934463
  • Record Type: Research project
  • Source Agency: Center for Transformative Infrastructure Preservation and Sustainability
  • Contract Numbers: 69A3552348308
  • Files: UTC, RIP
  • Created Date: Oct 20 2024 12:40PM