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Development of a Balanced Asphalt Mixture Design Procedure for New Mexico

File Language:
English


Details

  • Creators:
  • Corporate Creators:
    University of New Mexico
  • Corporate Contributors:
    New Mexico. Department of Transportation. Research Bureau
  • Subject/TRT Terms:
  • Publication/ Report Number:
    NM18MSC-02
  • Resource Type:
    Tech Report
  • Geographical Coverage:
  • Edition:
    April 10, 2018 – April 10, 2019
  • Corporate Publisher:
    New Mexico. Department of Transportation
  • Abstract:
    A balanced mix is a mix that satisfies both rutting and cracking criteria or limiting values. Though rutting criteria of NMDOT mixes was obtained from a recently completed project, the cracking criteria of NMDOT mixes were not available. Therefore, extensive literature was gathered in this study to come up with limiting values of different types of cracks. It was revealed that only a very few states have conducted cracking tests so far. Therefore, the cracking criteria employed in this study were not the final ones but gave the researchers a starting point for designing a balanced mix. The goal of this project was to collect aggregates and binders and design trial asphalt mixes and examine if one of them satisfied both rutting and cracking criteria. In this study, aggregates from one source were collected, and trial mixes were designed using one Performance Grade (PG) binder in the laboratory using the Superpave procedure. The mix was evaluated for balanced mix criteria. Rut testing was performed using the Hamburg Wheel Tracking Device (HWTD) and cracking tests were performed in Semicircular Bending (SCB) and Disk-Shaped Compact Tension (DCT) modes. To this date, it was observed that the mix does not satisfy some of the cracking criteria. A balanced mix could not yet have resulted from this study. It can be also noted that very recently an Overlay Tester (OT) was acquired through this project. Only a very few OT tests were conducted so far to gain experience and have confidence in the new test data.
  • Format:
    PDF
  • Funding:
    456-567
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:594045f9dfc906745654bb61a1e77e4fc95d53da71f475751f6acacbe387e19d1bc9fa0dd09eabcc7e1e787ceec74e19dd6789438d85461efe8a3dbf361ba309
  • Download URL:
  • File Type:
    Filetype[PDF - 2.95 MB ]
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