TRANSCRIPT FROM VIDEO:

While high-RAP mixes include any mix with more than 25% Reclaimed Asphalt Pavement, some departments of transportation are looking to push the envelope on RAP usage. When using an effective rejuvenator, RAP usage of up to 100% is possible while maintaining performance specifications.  

A field trial demonstrated the viability of 100% RAP mixes with no virgin bitumen when using ReLIXER, Sripath’s recycling agent. The sample met or exceeded all specifications when undergoing a number of tests including the Marshall Test for compaction, Hamburg Wheel Tracking Test for rutting, and Semi-Circular Bending Test for cracking resistance. Samples were also tested after a year of roadway use with similar positive results. 

While extremely high RAP usage can be challenging to manufacturing and production and may present a limited use case, the results demonstrate the viability of highly recycled roadways when dosed with an effective rejuvenator.