Crumb Rubber Modified Bitumen

CRMB is a blend of selected grades of Bitumen and modifier. The rubber modifier used, balances the required visco-elastic balance of the bitumen binder, which improves the resistance to thermal and...

Sr.No. CHARACTERISTICS CRMB5 1 Penetration at 25°C, 0.1mm,100g, 5s <60 2 Softening Point, (R&B), °C, min 55 3 Viscosity @150°C,P(RV) 2-6 4 Elastic recovery of half thread in 50 ductilometer at 15°C,%,min 5 TFOT i) Loss in mass heating,%,max 1 ii) Increase in softening point (R&B) °C,%,min 6 iii) Ret.30-Pen,%,(P1-P2)*100/P1,max 40 6 Separation difference in softening points (R&B) °C,max 4 7 Elastic Recovering of Half thread in ductilometer at 25°C,%,min 8 FRASS Breaking point, °C