The objectives of this paper are to present an approach using statistical analysis and Miner’s law to predict the fatigue performance (crack initiation) of the WesTrack test sections. A strain function, calculated by a layered-elastic program, was statistically determined in terms of temperature at the bottom of the asphalt layer, temperature gradient, subgrade modulus, air-void content, and asphalt content. With integration of laboratory fatigue test results, strain calculation, and Miner’s law, the methodology produces the output in terms of cumulative fatigue damage versus cumulative repetitions for both wander and no-wander cases. Lack of consideration of nonlinear stiffness deterioration of asphalt concrete, crack propagation, and an appropriate correction factor makes long-term fatigue performance prediction conservative and not fully compliant with the condition survey data from WesTrack. The simulation indicated that the WesTrack coarse mixes took longer to initiate fatigue cracks than the fine and fine-plus mixes did but may propagate cracks faster in cold weather.
WesTrack Fatigue Performance Prediction Using Miner’s Law
Transportation Research Record: Journal of the Transportation Research Board
Transportation Research Record: Journal of the Transportation Research Board ; 1809 , 1 ; 137-147
01.01.2002
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
PART 2 - FLEXIBLE PAVEMENT DESIGN - WesTrack Fatigue Performance Prediction Using Miner's Law
Online Contents | 2002
|Performance Prediction with the MMLS3 at WesTrack
NTIS | 2001
|Simple Performance Test for Fatigue Cracking and Validation with WesTrack Mixtures
Transportation Research Record | 2002
|WesTrack: The Road to Solutions
Online Contents | 1996
|Online Contents | 1997
|