Crumb Rubber Modified Bitumen

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
Application of CRMB
  1. Stability & Resistance from extreme weather Conditions.
  2. Dressing up strong road construction & Development for movement of Heavy Vehicle Movement & High Volume of Traffic.
  3. Procuring From low & High Temperature Cracking of roads.
  4. For Making High Load Highways, Junctions, Sea Port, Runway of AirField, Heavy Traffic Movement Roads, etc.