ABSTRACT
One of the main distress criteria affecting the performance of bituminous pavement is fatigue cracking. Such cracks appear in the wheel path and are due to myriad of factors including aging, stiff binders, traffic repetitions and large magnitude of loads. Taking into account the increased emphasis on the use of Warm Mix Asphalt (WMA) technologies, it is necessary to investigate the fatigue life of WMA mixtures since they are less susceptible to aging. Different post-processing methods exist to analyze the fatigue experiments and amongst them, the quantification of energy dissipation during fatigue loading is promising. In this investigation, two types of WMA technologies namely, chemical additive based (EVOTHERM) and organic additive based (SASOBIT) were benchmarked with hot mix asphalt. Four point bending beam test was conducted to determine the fatigue life and the data was analyzed using the evolution of energy dissipation.
