ABSTRACT
The benefits of recycling asphalt pavements (RAP) can be attributed to a reduction in the costs of new construction and rehabilitation projects, environmental conservation of energy, mineral aggregates and bituminous binder, and the preservation of road geometry. The recycling and reuse of bituminous materials is not a recent development, the first asphalt pavement recycling project being recorded in 1915. RAP material consists of aggregate and bitumen that has been removed and/or reprocessed from an asphalt pavement. In addition, recycling can be grouped into hot, warm and cold processes depending on the virgin binder deployed in the recycling operation. In addition, recycling can be grouped into hot, warm and cold processes depending on the virgin binder deployed in the recycling operation. In-plant recycling involves stockpiling RAP at the asphalt plant before mixing with virgin material to produce a new asphalt mixture. In the hot recycling process, RAP material is blended with superheated virgin aggregate before mixing with virgin bitumen.
