Cutback Bitumen is by adding controlled amounts of petroleum solvent such as Kerosene, Gasoil and Gasoline. Base on reduce of bitumen viscosity for spraying in ambient temperature for several application such as Asphalt Pavement Construction, Maintenance, Prime and Tack Coating and ... Base on the time of curing after spraying, Cutback bitumen classification as Rapid Curing (RC), Medium Curing (MC) and Slow Curing (SC).