About CRMB
CRMB is 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 improve pavement life, reduce maintenance costs and excellent driving comfort, CRMB will meet specification of IS: 15462:2004.
Application
CRMB is ideal product for wearing courses on
- Heavy trafficked lane
- Slopes, roundabouts, junctions
- Warm and inverted roofs
- High rainfall regions
- Parking Places
- Airport Runways
- Flyovers and Bridges
- Industrial and multimodal platforms
- Also recommended for Stress Absorbing Membrane Interlayer application
Advantages
- Lower susceptibility to daily and seasonal temperature variations
- Prevents Rutting
- Better age resistance properties
- Better edge resistance properties
- High skid resistance
- High resistance to deformation at elevated pavement temperature
- High dimensional strength
- Better adhesion between aggregate and binder ensures longer life, strength and stability.
Technical Specification
| Sr.No. | Properties | CRMB 55 | CRMB 60 |
|---|---|---|---|
| 1. | Penetration at 25°C, 0.1 mm Max | 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, °C, min | 220 °C | 220 °C |
| 5. | Separation, difference in softening point, °C, max | 4 | 4 |
| 6.a | a. Penetration of residue at 25°C, % min | 60 | 60 |
| 6.b | b. Increase in softening point, °C, max | 6 | 5 |
| 6.c | c. Elastic Recovery of half thread in Ductilometer at 25°C of residue, % min | 35 | 35 |
*GRADE CRMB 55: Recommended for moderate climate areas
*GRADE CRMB 60: Recommended for hot climate areas.
* This product is available from our Vadodara Branch.