Crumb Rubber Modified Bitumen
CRMB is a special type of value added Bitumen where the properties have been improved by blending with crumb rubber and special type of additives. CRMB with enhanced physical properties, is more resistant to temperature variations, weathering and high traffic loads. This leads to improved pavement life, reduced maintenance costs and excellent driving comfort.
| # | Properties | CRMB 50 | CRMB 55 | CRMB 60 |
|---|---|---|---|---|
| 1 | Penetration at 25˚C, 0.1mm max | 70 | 60 | 50 |
| 2 | Softening Point, ˚C min | 50 | 55 | 60 |
| 3 | Elastic Recovery of half thread in Ductilometer 15 ˚C, % min | 50 | 50 | 50 |
| 4 | Flash Point, ˚C, min | 220 | 220 | 220 |
| 5 | Separtion, difference in Softening Point, ˚C, min | 4 | 4 | 4 |
| 6 |
Thin Film Oven test and test on residue Reduction in Penetration of residue at 25˚C, % max |
40 7 35 |
40 6 35 |
40 5 35 |