TRANSCRIPT FROM VIDEO:
Balanced mix design that incorporates Reclaimed Asphalt Pavement dosed with a rejuvenator should consider adherence to performance properties both now and many years after wear and weathering. Testing should include an evaluation of how the aging process impacts these mixes to ensure durability and long-term performance.
Simulated aging tests for measures of the Cracking Tolerance Index, or CT Index, which can provide important data around how samples will age. When compared to virgin asphalt mixes, both 30% RAP and 50% RAP mixes dosed with ReLIXER, Sripath’s bio-oil recycling agent, demonstrated equivalent performance to the no-RAP control mix. Notably, those samples dosed with ReLIXER also outperformed aged samples dosed with a traditional petrochemical rejuvenator. This demonstrates that, with the right mix design and with the right rejuvenator, high-RAP mixes can perform similar to no-RAP mixes over time.