EME2 Fatigue Properties and Pavement Design in a Sub-tropical Climate

摘要

Enrobe a module eleve Class 2 (EME2) is currently being introduced into Queensland which has a warm sub-tropical climate. While the French design system for flexible pavements directly applies inputs from performance-based mix design, immediate implementation of such a system in Queensland was inhibited by the existing Australian pavement design methodology which does not make such links. In addition, there has been limited application of EME2 in similar climates as in Queensland. The execution of a manufacturing and paving trial, including collection of pavement temperature at various depths over a one-year period, provided vital input into the technology transfer. Flexural modulus temperature-frequency sweep tests, and a series of asphalt fatigue tests at 10, 20 and 30 °C were carried out. The results provide input into the LCPC-developed methodology for calculating asphalt fatigue properties at a given equivalent temperature, and now is utilized and validated for a warm sub-tropical climate.