Crumb Rubber Modified Bitumen (CRMB)
CRFlex®55/60 is a range of Crumb Rubber Modified Bitumen (CRMB). This CRMB bitumen is manufactured using crumb rubber produced by recycling used tyres with bitumen and specific additives to improve pavement durability.
It is specially formulated using unique technology that enables homogeneity, stability, and consistent properties of the binder. The advanced formulation ensures that CRMB bitumen delivers improved performance for road pavements exposed to heavy traffic and varying climatic conditions.
To achieve this, special stabilizing additives are used under a controlled manufacturing process, resulting in unique binder properties that remain consistent and as per the latest technical guidelines.
FAQs
CRMB bitumen provides higher resistance to cracking, including reflective cracking, and improves the fatigue life of pavements. Its enhanced properties help roads maintain structural stability even under extreme climatic conditions.
Yes, CRMB bitumen performs well under heavy traffic conditions and varying temperatures. It offers better water resistance, improved tensile strength, and lower susceptibility to daily and seasonal temperature fluctuations.
Benefits
- Higher resistance to deformation at elevated pavement temperatures.
- Better adhesion between aggregate and binder.
- Higher fatigue life and delayed cracking and reflective cracking.
- Overall improved performance in extreme climatic conditions and under heavy traffic conditions.
- Better water resistance.
- Resistance to creep and higher indirect tensile strength.
- Lower susceptibility to daily and seasonal temperature variations.
Available Grades
CRFlex® 55 / CRFlex® 60
Product Certifications
Bureau of Indian Standards (BIS): CM/L – No – 8400162409.
Specification
CRFlex®55/60 CRMB bitumen meets the specifications as per IS 17079:2019.
