Increasing the Content of Reclaimed Asphalt in Asphalt Mixture by using Rejuvenators

Abstract Recycling pavements is beneficial on various levels, since using reclaimed asphalt (RA) has a positive effect the economy and environmental protection at same time. Removed old pavement no longer considered as waste material, which to be landfilled, but useful material for further applications. Leading reduction of need virgin materials preserve planet. At start, RA was used construction embankments unbound granular layers, later cold recycling became another effective solution. After years experiments, rate increased reach even 100 %. But typical content in hot mixtures between 25 % 40 The presence mixture negative properties. Two alternatives were order soften aged bitumen – use softer binder or special additives, i.e., rejuvenators. This study evaluated possibility increasing (30 50 %) by adding mainly bio-based alternative Mechanical performance means laboratory investigations characteristics dedicated durability, stiffness, cracking potential.