Properties of Polymer Modified Bitumens with Addition of Aged Rap Binder

The aim of this paper is to describe the effect of adding different amounts of aged binder recovered from RAP on the change in properties of polymer modified bitumen 45/80-65 and polymer modified bitumen referred to as 45/80 RC, which is a binder suitable for cementing asphalt mixtures containing high amounts of RAP. It is also an effort to evaluate the changes in properties of these blended asphalt binders caused by laboratory simulation of aging by rolling thin film oven test (RTFOT) and pressure aging vessel (PAV). Both RAP containing unmodified asphalt binder and RAP obtained from an asphalt mixture that can be assumed to contain polymer modified bitumen are used to recover the aged binders. The aged binder obtained from the RAP is dosed into the fresh binder at 0 %, 15 %, 30 % and 50 %