Crumb Rubber Modified Bitumen (CRMB)

CRMB is a sustainable and high-performance binder produced by incorporating finely ground crumb rubber from recycled tires into bitumen, improving asphalt mixture performance while addressing tire waste disposal issues.

Benefits

• Enhanced Durability: Increases resistance to rutting, cracking, and fatigue.
• Improved Flexibility: Better adaptability to temperature fluctuations, reducing cracking risks.
• Noise Reduction: Reduces noise levels compared to conventional asphalt pavements.
• Environmental Benefits: Utilizes recycled tire waste, promoting sustainability.
• Improved Skid Resistance: Enhances road safety in specific applications.

Applications

• Highways and Major Roads
• Airport Runways
• Urban Roads
• Overlay Construction

Technical Specifications

S.No	Test Items	CRMB-55	CRMB-60
1	Penetration @ 25 °C, 0.1 mm, 100 g, 5 sec	<60	<50
2	Softening Point, °C, (min)	55	60
3	Elastic Recovery of half thread in Ductilometer at 15 °C, (% min)	50	50
4	Flash Point, PMO, °C, (min)	220	220
5	Separation, Difference in softening point, °C, (max)	4	4
6	Penetration @ 25 °C, 0.1 mm, 100 g, 5 sec, (max % of Original)	40	40
	Increase in Softening Point, °C, (max)	6	5
	Elastic Recovery of half thread in Ductilometer at 25 °C, (% min)	35	35