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How to choose rejuvenator type and dose?

posted Sep 8, 2014, 7:39 AM by Martins Zaumanis   [ updated Sep 9, 2014, 2:24 AM ]
We have the answer and it is published in the latest article: "Determining optimum rejuvenator dose for asphalt recycling based on Superpave performance grade specifications". It contains practical means for minimizing the required amount of extraction and testing of RAP bitumen in order to choose a rejuvenator type and dose that will satisfy specification requirements. Six rejuvenators at two doses each were used for developing and verifying simple relationships between the Superpave PG grade (and penetration) of RAP binder and rejuvenator type and dose. Finally, a five step procedure is described for analysis of the RAP stockpile to allow ensureing correspondence to the required Superpave specifications or screen the RAP/rejuvenator combination that can not do the trick. Download the article here