Rajasi Energy

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. Crumb rubber gives the satisfactory results by using it in 15% or proportion to replace the bitumen for various tests of bitumen& bitumen mix.crumb rubber gives the Marshall Stability values od 1615.84 Kg by using 15% of CRMB use with bitumen mix,it is greater than the marshall stability value of conventional bitumen mix.

APPLICATIONS:

Procuring From low & High Temperature Cracking of roads.

For Making High Load Highways, Junctions, Sea Port, Runway of AirField, Heavy Traffic Movement Roads, etc.

Stability & Resistance from extreme weather Conditions.

Product Specifications ( as per IS:15462:2004) Properties of tiki polymer and rubber modified bitumen
Designation	Elastomeric Thermoplastic Based			Crumb Rubber Modified Binders			Method of tests
	PMB 120	PMB 70	PMB 40	CRMB 50	CRMB 55	CRMB 60
Penetration, at 25°C, 100g, 5 sec, in 1/100cm	90 to 150	50 to 90	30 to 50	< 70	< 60	< 50	IS: 1203-1978
Softening poing, (R&B), °C, Minimum	50	55	60	50	55	60	IS: 1205-1978
Frass Breaking Point, °C, Maximum	-20	-16	-12	–	–	–	IS: 9381-1978
Flash Point by COC, °C, Minimum	220	220	220	220	220	220	IS: 1448(P-69)
Elastic Recovery of Half Thread in Ductilometer at 15°C, %, Minimum	70	70	70	50	50	50	IS: 15462 Annex A
Seprtation Difference in Softening Point (R&B), °C,Maximum	3	3	3	4	4	4	IS: 15462 Annex B
Viscosity at 150°C , Poise	1-3	2-6	3-9	1-3	2-6	3-9	IS: 1206 (P-I)
This Film Oven Test (TFOT) on Residue (IS:9382-1992)
Loss in Mass % Maximum	1.0	1.0	1.0	1.0	1.0	1.0	IS: 9382-1992
Increase in softening point (R&B) °C Maximum	7	6	5	7	6	5	IS: 1205
Reduction in Penetration of Residue at 25°C % Maximum	35	35	35	40	40	40	IS: 1203
Elastic Recovery of Half thread in Ductilometer at 25°C % Min	50	50	50	35	35	35	IS: 15462 Annex A