The University of Waterloo's Centre for Pavement and Transportation Technology, CPATT, is committed to working with public and private sector partners to develop sustainable technologies. Recycled Asphalt Shingles (RAS) is a product that contains approximately 30% asphalt cement by mass weight. Sources of RAS include trimmings from shingle insulation and decommissioned shingle roofs. Reuse of these materials leads to financial savings through avoidance of disposal costs and reduction of the amount of virgin asphalt binder required in HMA. CPATT in cooperation with Miller Paving Limited and Ontario Centre of Excellence Materials Manufacturing Ontario (OCEMMO) as well as subcontractor Ecole de Technologie Superieure (ETS) in Montreal undertook an investigation of the use of recycled asphalt shingles (RAS) in a HL8 base course mix. Five asphalt pavement mix designs were considered, incorporating varying quantities of Recycled Asphalt Pavement (RAP) and shingles. Mix designs were compared using the results of the dynamic modulus test and resilient modulus test run in the CPATT laboratory and the Thermal Stress Restrained Specimen Tensile Strength Test (TSRST) and French wheel rutting test run at ETS. For the covering abstract of this conference see ITRD number E216597.
Samenvatting