Improved method of considering air void and asphalt content changes on long-term performance of asphalt concrete pavements

W. A. Zeiada, Kamil Kaloush, B. S. Underwood, Michael Mamlouk

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

Mixture properties (aggregate gradation and volumetric quantities), rate of loading and environmental conditions are the most important factors that affect the |E*| values. The main objective of this study was to develop a rational approach to investigate and model the effect of air voids and asphalt content on the |E*| master curves and consequently predict pavement performance. In this study, |E*| tests were conducted on three asphalt concrete mixtures with the same aggregate gradation, but different binder grades. For each of these mixtures, the air void and asphalt contents were varied at three levels. It is found that the developed method provides a more accurate estimate of the effects of volumetric changes in hot mix asphalt. The application of the proposed approach would be most beneficial for quality control/quality assurance purposes, performance-related specifications and for estimating contractors' incentives and penalties, where |E*| is utilised to predict the pavement performance.

Original languageEnglish (US)
Pages (from-to)718-730
Number of pages13
JournalInternational Journal of Pavement Engineering
Volume15
Issue number8
DOIs
StatePublished - Sep 14 2014

Keywords

  • air voids
  • asphalt content
  • dynamic modulus (|E*|)
  • pavement
  • performance

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanics of Materials

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