Development of Methods for Estimating Remaining Life of Hot Mix Asphalt Field Mixes

Over ninety percent of pavements in Arkansas and the surrounding region are surfaced with hot-mix asphalt (HMA). Current HMA mix design procedures, particularly Superpave, produce HMA mixtures that have proven to resist rutting and cracking (fatigue). However, on occasion HMA is placed and experiences premature distress - rutting, fatigue cracking, stripping, raveling, etc. - early in the life of the pavement. HMA may also be placed that does not fully meet applicable quality control standard, i.e. binder content, air voids, density, etc. In addition, it may be desirable to assess the current condition, and potential future performance, of a pavement that has been in service for a number of years. IN many of these situations, it is difficult to assess the quality of the asphalt layer in terms of its future expected performance. A set of forensic tools are needed to assess the "remaining life" of a hot-mix asphalt layer in-situ; such tools may provide highway agency personnel data necessary to determine immediate and/or future reconstruction/rehabilitation measures to be taken. This research will focus on a number of non-destructive test (NDT) methods and procedures that hold promise as forensic tools for the assessment of hot-mix asphalt. The objectives of this study will be to: (1) evaluate non-destructive test (NDT) methods and procedures for characterizing hot-mix asphalt in-situ; (2) develop methodologies for using NDT results for estimating the remaining life of ho-mix asphalt; (3) identify any materials tests (destructive) necessary to estimate remaining life; and (d) develop a field inspection guide for hot-mix asphalt pavements regarding suspect HMA mixtures. The direct application of the proposed research will be to highway agencies and municipalities charged with the construction, maintenance, and rehabilitation of HMA pavements. Project implementation products will include a field inspection guide for HMA pavements; testing procedures and specifications for conducting non-destructive and (potentially) destructive test for HMA pavement evaluation; and assessment procedures for estimating the remaining life of in-service hot-mix asphalt concrete.

    Language

    • English

    Project

    • Status: Active
    • Funding: $250138.00
    • Contract Numbers:

      MBTC-2070

    • Sponsor Organizations:

      Mack Blackwell National Rural Transportation Center

      University of Arkansas
      Fayetteville, AR  United States  72702
    • Project Managers:

      Brown, Jeffrey

    • Performing Organizations:

      University of Arkansas, Fayetteville

      Department of Industrial Engineering
      Fayetteville, AR  United States  72701
    • Principal Investigators:

      Hall, Kevin

    • Start Date: 20050701
    • Expected Completion Date: 0
    • Actual Completion Date: 20080630
    • Source Data: RiP Project 18661

    Subject/Index Terms

    Filing Info

    • Accession Number: 01543075
    • Record Type: Research project
    • Source Agency: Arkansas State Highway and Transportation Department
    • Contract Numbers: MBTC-2070
    • Files: UTC, RiP
    • Created Date: Nov 4 2014 1:01AM