CUTBACK BITUMEN

 

Cutback Bitumen is made by reducing the viscosity of and ordinary bitumen by adding mostly petroleum type solvent. Cutback Bitumen are used because their viscosity is lower than that of neat asphalt and can thus be used in low temperature applications. After a cutback is applied the solvent evaporates away and only the Bitumen is left. A cutback bitumen is said to cure as the petroleum solvent evaporates. Cutback bitumen are typically used as prime coats and tack coats. Generally Cutback Bitumen are divided into three groups depending on their volatility of the solvent added:

 

Slow Curing often called road oils, are usually a residual material produced from the fractional distillation of certain crude petroleum. Traditionally any kind of aromatic, naphthenic and paraffinic oils are used. Slow Curing liquid bitumen materials can be prepared by blending bitumen with an oily petroleum fraction.

Medium Curing are a blend of Bitumen with lighter hydrocarbons such as kerosene.

Rapid Curing products are prepared with a light, rapidly evaporating diluent such as a naphtha or gasoline.

 

Medium Curing Bitumen MC30, MC70, MC250.MC 800, MC3000, Rapid Curing Bitumen RC70,RC250, RC 800, Oxidized Bitumen ( Blown Bitumen) of various grades like 90/15, 85/25, 95/25, 110/30, 90/40, 115/15, 10/20 & to the specification of the customer and Emulsions, Rapid and Slow Setting for various applications.