Accelerated Life Modeling of Superpave Mixtures

This study focused on reducing duration of the Hamburg wheel-tracking device (HWTD) test. Four fine-graded Superpave mixtures with 12.5-mm Nominal Maximum Aggregate Size (NMAS) were selected for this study. The average number of wheel passes to a 20-mm rut depth in the HWTD tests was used to build accelerated life models with a Weibull distribution. Good consistency between the accelerated life (statistical) model-predicted and observed test results was obtained for the standard load level (705 N) and 60°C test temperature. The HWTD test duration can be reduced to about two hours when higher test temperature is used.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; Photos; References; Tables;
  • Pagination: pp 49-58
  • Monograph Title: T&DI Congress 2014: Planes, Trains, and Automobiles

Subject/Index Terms

Filing Info

  • Accession Number: 01531789
  • Record Type: Publication
  • ISBN: 9780784413586
  • Files: TRIS, ASCE
  • Created Date: Jun 2 2014 3:01PM