Cutback bitumen are classified into three groups depending on the relative speed of evaporation:
Rapid-curing (RC):
Bitumen cement combined with a light petroleum diluent of high volatility, generally with a boiling point similar to
gasoline or naphtha. Grades include RC-30, RC-70, RC-250, RC-800, and RC-3000. The higher number indicates
a higher viscosity.
Medium-curing (MC):
Bitumen cement combined with a petroleum diluent of intermediate volatility, generally with a boiling point similar
to kerosene. Grades include MC-30, MC-70, MC-250, MC-800, and MC-3000.
Slow-curing (SC):
Bitumen cement combined with a petroleum diluent of low volatility, generally with a boiling point similar to fuel oil.
Grades include SC-70, SC-250, SC-800, and SC-8000.
Cutback bitumen are most commonly used in road mixing operations, stockpile mixes, and spray applications such
as prime, tack and seal coats.
Application Rate- From 0.6 litre per m²
Spraying / Application Temperature- 60 - 80°C
Packing in steel drum
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