GUIDELINES FOR DESIGN AND CONSTRUCTION OF RECYCLED ASPHALT MIXTURES. INTERIM REPORT

This report provides information related to the feasibility of recycling salvaged asphalt mixtures, describes a design procedure that can be used to design asphalt mixtures containing salvaged asphalt material, and provides recommendations to insure satisfactory performance of pavements constructed with salvaged material. After the causes of distress or characteristics of salvaged material have been determined, detailed recommendations are made for determining (1) if additives, softening and antistripping agents, are needed, (2) if virgin aggregate and asphalt should be added, and (3) if so, how much. Examples demonstrate the use of the mixture design technique.