CUTBACK BITUMEN MC-70

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DESCRIPTION

Cutback Bitumen (Liquid Bitumen) is a mixture of petroleum solvent & bitumen. Typical solvents include naphtha (gasoline) and kerosene. The type of solvent controls the curing time and its ultimate strength.
Solvent is added to reduce the viscosity of the bitumen temporarily so that it can penetrate pavements more effectively or to allow spraying at temperatures that are cold for successful sprayed sealing. The solvent will evaporate after the spraying to leave the remaining material similar in hardness to that of the original bitumen.

SPECIFICATION

Cutback Bitumen MC-70 is a medium-curing liquid bitumen blended with petroleum solvent to temporarily reduce viscosity for improved penetration and priming performance, conforming to ASTM D-2027 requirements. It exhibits kinematic viscosity of 70–140 mmΒ²/s at 60 Β°C, minimum flash point of 38 Β°C, a residue from distillation of about 55 % by volume, penetration of approximately 120–130 at 25 Β°C, ductility β‰₯ 100 cm and solubility β‰₯ 99 %, with water content ≀ 0.20 % by volume.

APPROVALS / CERTIFICATES

USES

To ensure proper bonding and penetration in pavement construction works, it is recommended for:

  • Prime coat application on granular road bases before asphalt laying.
  • Seal coat works to improve surface adhesion and durability.
  • Surface dressing and patch repair works.
  • Spraying applications in cooler weather conditions.
  • Temporary dust control and binding of loose mineral particles.

STORAGE

  • Store in tightly closed containers in a cool, well-ventilated area.
  • Keep away from heat, open flames and sources of ignition.
  • Protect from direct sunlight and excessive temperature.
  • Avoid contact with water and moisture contamination.
  • Follow all safety regulations for storage of flammable materials.

ADVANTAGES

  • Good penetration properties
  • Improved adhesion
  • Suitable for cooler weather application

SURFACE CLEANING

Tools: Clean with Kerosene.
Hand: Use a hand cleanser or kerosene followed by soap and water.

APPLICATION

Bitumen Cutback Is used for a wide range of application Where the temperatures are too cool for an effective priming, or where traffic is likely to upset a primed surface before the final seal sprayed, a primer seal can be used to give adequate protection of the pavement for periods up to 6 ~ 12 months.

SUPPLY

Steel drums (palletized) Bulk tankers.

PRIMING & SEAL COAT

Cutback bitumen’s suitable for priming are also used for seal coats, which is applied to an underlying surface to help with adhesion of subsequent asphalt layer. A typical rate of application between 0.2 to 0.4 litres/sq. m.

AREAS OF APPLICATION

  • Cutback bitumen’s suitable for primer sealing can also be used in the manufacture of Pre- mix asphalt, which is used in patch repairs.
  • Sprayed sealing: Cutback bitumen’s are used extensively in spray sealing applications, particularly in cooler weather where they improved initial stone retention due to their low viscosity.

HEALTH, SAFETY AND ENVIRONMENT

  • Always wear suitable personal equipment (PPE). Full skin protection is required to avoid accidental burns when transferring or handling bitumen.
  • Always prevent contact between water and hot bitumen by checking the contents of the previous load before loading bituminous products into bulk tankers and by strictly follow the procedures to avoid frothing and boil over of tanks.
  • Avoid exposure to fumes by standing back on the gantry or up wing until the vapours have dispersed.
  • Minimise bitumen fumes by heating bitumen and asphalt products to the recommended temperatures.
  • Minimise the use of diesel when cleaning equipment as this contributes to the bitumen fume. Cutbacks are sometimes used at a temperature above their flash point, so care must be taken regarding the products’ flammability. Ensure personnel are well trained in the correct handling & safety procedures.

TECHNICAL SUPPORT

International Insulation Company (IIC) – Bitugulf technical support team consist of expert engineers offers a comprehensive service support to specifiers, end users and contractors, and on-site technical assistance.

Note: The technical data provided reflects typical properties based on laboratory tests and practical experience, subject to UEAtc tolerance levels. While we cannot guarantee performance under all conditions, further details are available upon request, with a standard variation of up to 20%.

TECHNICAL DATA