The literature survey performed as part of Year 1 of this study confirmed the need to improve the models for the prediction of fatigue in asphalt pavements at elevated temperatures. Current fatigue models predict the fastest accumulation of fatigue damage at higher temperatures, while available field data shows that most fatigue damage accumulates in cooler winter months. The analysis of a Federal Highway Administration (FHWA) Accelerated Loading Facility study also indicated that the current Austroads fatigue prediction model may be more conservative at elevated temperatures compared to low and medium temperatures.
Download ReportDownload Report
