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Crumb Rubber Bitumen (CRMB) is a special type of bitumen whose properties are improve by the addition of crumb rubber. Crumb Rubber Modified Bitumen is manufactured by mixing of crumb rubber powder and Bitumen and some other additives (for stabilizing of the product) in a high sheared mixing machine at a high temperature.

Crumb rubber modified bitumen has been proven to exhibit higher rut resistance (37-60%) and can withstand crack inducing processes more robustly than the conventional bitumen roads.

Crumb Rubber Modified Bitumen (CRMB) is hydrocarbon binder obtained through physical and chemical interaction of crumb rubber (produced by recycling of used tyres) with bitumen and some specific additives. The Flextal range of CRMB offers binders which are stable and easy to handle with enhanced performances.

CRMB is suitable for pavements submitted to all sorts of weather conditions, highways, traffic denser roads, junctions, heavy duty and high traffic sea port roads etc. It is a durable and economical solution for new construction and maintenance of wearing courses.


  • Improve durability
  • Overall improved performance in extreme climatic conditions
  • Lower life-cycle cost
  • Less reflective cracking
  • Better adhesion
  • Less bleeding during construction
  • Better drainage
  • Substantial noise reduction
  • Wider utilization temperature interval
  • Better skid resistance.
  • for use in thin surfacing and stone mastic asphalt (SMA) mixes;
  • for use in drainage (porous) asphalt applications;


  • Main Roads & Highways
  • Airports
  • Roads with heavy traffic
  • Toll roads
  • Bus Lanes
  • Roundabouts