Cutback bitumen is a kind of bitumen which is produced through mixing bitumen with a solvent such as kerosene. It is used for better adherence of soil and asphalt and it is categorized based on its viscosity grade. MC30 bitumen viscosity is between30 – 60 CST.
Cutback bitumen’s suitable for primer sealing can also be used in the manufacture of pre-mix asphalt, which is used in patch repairs. Cutback bitumen’s are used extensively in sprayed sealing applications, particularly in cooler weather where they provide improved initial stone retention due to their lower
viscosity. Typically, a single application of the appropriate cutback bitumen is sprayed onto the primed pavement onto which aggregate is laid.