BNA Cutback Grade Bitumen is normally used in spraying and in some mixing application. Cutback Bitumen is penetration grade bitumen blended with a solvent such as kerosene, white spirit, gasoline and naphtha controlling the curing time. Cutbacks are divided into 2 types, Rapid Curing (RC) and Medium Curing (MC) depending on the solve used. Commonly used for road and pavement construction and maintenance. Cutback MC 30 is blended with a solvent such as Kerosene, a medium curing petroleum cutter.
BNA Cutback MC 30 containing 50% Bitumen, is commonly used as a Prime Coating. The process of priming involves applying a low viscosity binder to a prepared but usually unbound aggregate base. It is intended to be absorbed by the top layers of the base and provide a surface which is more easily wetted by a following bituminous covering. Cutback bitumen which is suitable for priming is also used for Tack-Coating. This is applied to an underlying surface to aid with the adhesion of the following asphalt layer.
PACKING AND SUPPLY
200 L New steel drums or reconditioned steel drums. Weatherproof packing for flexibility of storage.
STORAGE AND HANDLING
Original containers store in a cool dry place. Do not leave containers open.
RECOMMENDED APPLICATION RATE
Priming - Between 0.5L/m2 and 1.4 L/m2. Tack-coating - Between 0.2 L/m2 and 0.4 L/m2.
Recommended Spraying Temperature: 60 °C - 80 °C