Cutback Bitumen MC-70 is a medium-curing liquid asphalt produced by blending penetration-grade bitumen with petroleum solvents such as kerosene. The solvent temporarily lowers the viscosity of the bitumen, allowing easy application at ambient temperatures without the need for heating.

After application, the solvent gradually evaporates, leaving a durable asphalt residue that performs effective bonding and waterproofing functions.

What Is Cutback Bitumen MC-70?

MC-70 belongs to the Medium Curing (MC) category of cutback bitumen. Its controlled evaporation rate allows sufficient time for penetration into porous surfaces before curing, making it suitable for both road construction and waterproofing applications.

The reduced viscosity improves workability, surface wetting, and adhesion to mineral substrates.

Key Applications

Cutback Bitumen MC-70 is widely used for:

• Prime coat in road pavement construction

• Seal coats to improve chip adhesion

• Roof waterproofing systems

• Adhesive bonding of chippings on flat roofs

• Surface waterproofing and moisture sealing

• Plugging capillary voids and bonding loose mineral particles

• Patching and stockpile mixtures

It is especially effective where cold application is required and heating facilities are limited.

Advantages of MC-70 Cutback Bitumen

• Easy handling and spraying at ambient temperatures

• No need for thinning or heating

• Good penetration into granular and porous surfaces

• Reliable adhesion to mineral aggregates

• Controlled curing for uniform performance

• Suitable for road maintenance and waterproofing works

Packing Options

• Bulk supply in road tankers

• New steel drums with reinforced thickness

• Palletized packaging to prevent leakage during transport

Safety & Handling

• Refer to the Safety Data Sheet (SDS) before use

• Store and transport at the lowest practical temperature

• Keep away from ignition sources

• Avoid inhalation of vapors and skin contact

• Use appropriate personal protective equipment (PPE)

• Prevent product or washings from entering sewer or stormwater systems

Standard Compliance

Cutback Bitumen MC-70 is manufactured in accordance with ASTM D2028-97 (Reapproved 2004) for Medium Curing cutback petroleum asphalts used in pavement construction and treatment.

Technical Specifications – Cutback Bitumen MC-70