MC 70

Cutback MC70 is a medium-curing liquid bitumen, created by diluting bitumen with a petroleum-based solvent like kerosene. This process enhances the bitumen’s fluidity, making it ideal for specific applications in road construction and surface treatments.

Characteristics of Cutback MC70

• Medium Curing:
  The “MC” in MC70 indicates Medium Curing, referring to its moderate solvent evaporation rate, which provides adequate time for proper application before the bitumen sets.

• Solvent Content:
  Approximately 70 parts of solvent are blended with bitumen, resulting in a suitable viscosity for penetration and prime coat purposes.

Common Uses

1. Prime Coat:

   • Used on granular bases to prepare the surface for asphalt layers.
   • Improves the bond between the base and asphalt.

2. Dust Control:

   • Acts as a surface treatment to reduce dust in unpaved areas.

3. Sealant:

   • Protects road surfaces from water damage by sealing cracks and pores.

Advantages

• Ease of Application:
  Cutback MC70 flows easily without requiring high temperatures, saving energy and equipment costs.

• Versatility:
  Suitable for various climates due to its medium-curing properties.

• Effective Penetration:
  Its low viscosity ensures it penetrates well into substrates, improving adhesion.

Limitations

• Environmental Concerns:
  The use of petroleum solvents may pose environmental risks, such as VOC emissions.

• Flammability:
  Due to its solvent content, it is flammable and requires careful handling and storage.