Polymer Modified Bitumen

This invention relates to the process for the preparation of a polymer and rubber based modified binder which is
useful for the construction of roads catering to heavy traffic and also for the formation of airfields and surfacings, besides its use as binder for stress absorbing membrane (SAM) and stress absorbing membrane interlayer (SAMI) for sealing of cracks, preventive maintenance of flexible pavement and delaying reflective cracking.

Modified Bitumen performs better than ordinary Bitumen in high fall area and in situation where the aggregates are prone to stripping.

Advantages:

• Improves resistance is cracking resulting in stronger and more durable overlays even in extreme climatic
  conditions
• Reduces deformation on the roads even at temperatures of (50-70 degree c)
• Polymer and Rubber based modifier binder extend life of pavement by 50-70% compared to conventional bitumen
• PMB act as multigrade bitumen are economical when life cycle cost is taken into consideration