Consideration of hot mix asphalt thermal properties during compaction

Bruce A. Chadbourn, James A. Luoma, David E. Newcomb, Vaughan R. Voller

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

A computer program was developed at the University of Minnesota to predict asphalt concrete cooling times for road construction during adverse weather conditions. Cooling models require extensive experimental data on the thermal properties of hot-mix paving materials. A sensitivity analysis was performed to determine which thermal properties affect pavement cooling times significantly. The results indicated that more information on asphalt thermal conductivity and thermal diffusivity is required. Two suitable test methods for determining these properties at typical paving temperatures and densities were developed, and preliminary results for dense-graded and stone-matrix asphalt (SMA) mixes agreed well with values reported in the literature.

Original languageEnglish (US)
Pages (from-to)127-141
Number of pages15
JournalASTM Special Technical Publication
Volume1299
DOIs
StatePublished - 1996

Keywords

  • Cooling model
  • Finite difference
  • Hot-mix asphalt
  • Late season paving
  • Slab specimen
  • Stone-matrix asphalt
  • Thermal conductivity
  • Thermal diffusivity
  • Thermal probe

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