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About MAX-RAP

The current strategies for reusing reclaimed asphalt pavement (RAP) are limited due to the lack of understanding of the extent of the recyclability of bitumen. Hence, the proportion and grade of virgin bitumen, the use of the rejuvenator, and its dosage are based on trial and error. This study attempts to evaluate the extent of recyclability in RAP bitumen by analysing its chemical composition and rheological properties. The possibility of using various crude oil base fractions as an alternative to virgin bitumen and rejuvenator is explored. To ensure that one can maximise the use of RAP, the uncertainty associated with the degree of blending at the mixture level is circumvented by proposing a unique approach to isolate bitumen from RAP. This study, hence, proposes two novel concepts, quantifying the extent of recyclability of bitumen in RAP and the use of a novel processing concept on an industrial scale to enable the highest possible recovery level of the individual fractions of the RAP.