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BNB Modified Bitumen

BNB Modified Bitumen is bitumen with additives. These additives help in enhancing the properties of bituminous pavements. Pavements constructed with Modified Bitumen last longer which automatically translates into reduced overlays. Pavements constructed with BNB Modified Bitumen can be economical if the overall lifecycle cost of the pavement is taken into consideration.

Advantages of Modified Bitumen:

  • Lower susceptibility to temperature variations.
  • Higher resistance to deformation/wear and tear.
  • Better adhesion between aggregates and binder.
  • Increase in fatigue life.
  • Resistance in reflective cracking.
  • Better age resistance properties.

Types of Modified Bitumen:

A variety of additives are used for modification of Bitumen. The degree of modification depends on type of Modifier, its dose and nature of Bitumen. The most commonly used Modifiers are:

Synthetic Polymers

  • Plastomeric Thermoplastics
  • Low Density Polyethylene (LDPE)
  • Ethylene Vinyl Acetate (EVA)
  • Ethylene Butyl Acetate (EBA)
  • Ethylene Ter Polymer (ETP)

Elastomeric Thermoplastics

  • Styrene Isoprene Styrene (SIS)
  • Styrene Butadiene Styrene Block Copolymer

Natural Rubber

  • Latex Powder
  • Rubber Powder

Crumb Rubber

  • Crumb Rubber without additives
  • Crumb Rubber with additives