Abstract
It is necessary to investigate the physical, chemical characterization and amount of RAP binder in asphalt pavement containing large amount of RAP in order to select suitable pure asphalt binder grade to blending. This research aims to investigate the rheological characteristics and estimation fatigue life of the asphalt binder extraction from two years overlay asphalt pavement. The asphalt was taking from the process of extraction and recovery. Dynamic shear rheometer (DSR) test was conducted on the recovered asphalt to calculate the different variables, complex, elastic and viscous shear modulus, complex viscosity and the phase angle. The main pavement failure modes, rutting and fatigue cracking were addressed by these output parameters of DSR. Fatigue life is related to the energy absorbed during repeated load to pavement layer. The test results indicated that the asphalt extracted from the selected sections were stiff enough to resist rutting and fatigue failure Keywords: Reclaimed asphalt pavement binder, fatigue criteria, VECD, dissipated energy, energy stiffness ratio.
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