Evolution of molecular packing and rheology in asphalt binder during rejuvenation

Effective rejuvenators that restore the thermo-mechanical properties of aged asphalt would extend pavement service life and increase utilization of recycled material, cutting material and environmental costs. However, the efficacy and mechanism of action need to be characterized in order to optimize rejuvenator formulation and dosage. This study introduces the RIPS method (Rejuvenation Index based on Polydispersity and Stiffness) which applies...