How good are linear viscoelastic properties of asphalt binder to predict rutting and fatigue cracking?

J. S. Chen, C. J. Tsai

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

This article evaluates the effects of linear viscoelastic properties of asphalt on pavement rutting and fatigue cracking. The parameters in the binder specification recently developed by the Strategic Highway Research Program (SHRP) were also compared for pavement performance. Two studies were conducted for asphalt-aggregate mixes. The first study was the wheel tracking test to evaluate the rutting of mixes containing three asphalts. The second study was a detailed field study of the effects of binder properties on the pavement performance of eight different sections. Results of both investigations indicated that SHRP parameters were not sufficient indicators for predicting the rutting and fatigue cracking of pavements. The discrepancies between performance data and existing parameters of the binder mainly resulted from the inherited assumptions made during the specification development, that is, stress- or strain-controlled mode and traffic loading frequency. In order to directly relate the linear viscoelastic properties of asphalt binders to pavement performance, calculating the dissipated energy per traffic cycle, Wd, became imperative. Fundamental derivation of Wd was developed in this study. Results indicated that Wd could predict the rutting and fatigue cracking of pavements reasonably well. This study, proposed the dissipated energy, Wd, as the single parameter for evaluating pavement rutting and fatigue cracking.

Original languageEnglish
Pages (from-to)443-449
Number of pages7
JournalJournal of Materials Engineering and Performance
Volume8
Issue number4
DOIs
Publication statusPublished - 1999 Aug

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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