Blending the higher and lower viscosity residues in the required proportions can take place at the refinery, at terminals or at a third party facility, where blend components and finished products can be easily transported and distributed for use.

Each processing technique results in different grades of bitumen products, including:

  • Hard grade bitumens – used for paving.
  • Cutback bitumens - blends of penetration bitumens with a solvent such as kerosene.
  • Emulsions – stabilised suspensions of bitumen in water.
  • Polymer modified bitumens – mixtures of selected bitumens with polymers, such as thermoplastics or elastomers.


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