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Evaluation of a Density Profiling System for Asphalt Pavement Density Measurement

File Language:
English


Details

  • Creators:
  • Corporate Creators:
    Virginia Transportation Research Council (VTRC)
  • Corporate Contributors:
  • Subject/TRT Terms:
  • Publication/ Report Number:
    FHWA/VTRC 26-R01
  • Resource Type:
    Tech Report
  • Geographical Coverage:
  • Edition:
    Final Report
  • Corporate Publisher:
    Virginia Transportation Research Council (VTRC)
  • Abstract:
    During asphalt pavement construction, obtaining adequate and uniform density throughout the pavement layer through the compaction process is critical to achieving the desired performance. Optimum pavement density reduces oxidation potential and moisture damage, decreases rutting potential, and improves fatigue life. Numerous national research projects have cited pavement density as one of the most influential parameters defining the service life of asphalt pavement. The Virginia Department of Transportation’s (VDOT) asphalt pavement program requires the contractor to perform nuclear density readings and density measurements from cores and sawn plugs for acceptance. This process is not only destructive and potentially time-consuming but assesses only the density of a small portion of the pavement mat (about 0.003%). Although VDOT and other agencies use these processes, localized substandard density may not always be identified. Furthermore, this process cannot provide real-time feedback during the paving operation. VDOT needs to use methods that can assess a larger sample more rapidly to reduce the risk of accepting substandard material. One such method is by employing density profiling system (DPS) technology. The benefits to agencies using DPS technology include the ability to conduct measurements over the entire surface area of the new asphalt pavement layer, measure the density along the longitudinal joint where many pavements experience premature failures, and implement a statistical evaluation of the achieved density. The benefits to contractors include the ability to evaluate their compaction processes and make adjustments during the course of the work when improvements can still be implemented before paving completion.
  • Format:
    PDF
  • Funding:
    122365
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:e6f466b18e0f5f81f44085abe78278f4fc342a30a0a94c222048313b26408d74c9aa30eb62c25b9afa95e14352d06f5077bb8e6ea7d75873a6cf2d6479763c36
  • Download URL:
  • File Type:
    Filetype[PDF - 1.04 MB ]
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