Performance Assessment of Reclaimed Asphalt Pavement (RAP) in Road Surface Mixtures

Considerable amounts of Reclaimed Asphalt Pavement (RAP) are produced every year, as the road network requires maintenance to ensure safety and comfort its users. RAP is a 100% recyclable material useful fit be re-introduced into another cycle without downgrading functionality. Despite current knowledge about benefits associated with use, it not yet largely applied in several countries. This paper aims validate, on basis both short- long-term mechanical behaviours, application bituminous mixture high incorporation rate (75%) pavement wearing courses. A crude tall oil rejuvenator was used. Both oven ageing procedures were employed simulate that occurs during production in-service life, respectively. The tests for validating an alternative solution comprised stiffness, resistance fatigue, permanent deformation, determination water sensitivity. Furthermore, bitumen mobilisation degree evaluated mixing protocol established. In comparison virgin mixtures, found that, general, mixtures presented similar or better behaviour. process had hardening effect namely terms stiffness significant effects fatigue damage.