Asphalt Pavement Analyzer Sensitivity to Specimen Preparation Procedures and Testing Parameters

The Asphalt Pavement Analyzer (APA) is a laboratory accelerated pavement test device that has been used by many researchers and agencies as a tool to assess rutting potential of asphalt mixtures. Typically, the test is performed on cylindrical or beam specimens using a vertical load of 445 N, a hose inflation pressure of 690 kPa, and a test temperature equal to the high binder performance grade (PG) temperature. A simulated wheel load is repetitively applied to test specimens, typically for 8,000 cycles, and the rut depth is measured as a function of load cycles. This study evaluated the sensitivity of the APA to specimen preparation procedures (e.g., mixing, compaction, and volumetrics) and test parameters (e.g., temperature, wheel load, and hose pressure). Results from the study indicate several parameters can have an important impact on APA performance. These influences become important considerations when using the APA as a design or performance assessment tool.


  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; References;
  • Pagination: pp 59-68
  • Monograph Title: T&DI Congress 2014: Planes, Trains, and Automobiles

Subject/Index Terms

Filing Info

  • Accession Number: 01531792
  • Record Type: Publication
  • ISBN: 9780784413586
  • Files: TRIS, ASCE
  • Created Date: Jul 29 2014 8:53AM