Polymer Modified Bitumen
HARVIS PMB is a highly specialized blend of Bitumen with high quality polymer (Elastomeric) and is manufactured under carefully controlled conditions in a "State of Art plant. This is an exceptionally versatile product with enhanced properties that makes it suitable for wearing course application under special conditions like high rainfall and high traffic. It is strictly manufactured as per IRC SP:53-2002 and IS 15462:2004.
Typical properties:
| Specification | PMB 40 | PMB 70 | PMB 120 |
|---|---|---|---|
| Penetration at 25°C, 0.1 mm | 30-50 | 50-90 | 90-150 |
| Softening Point, °C min | 60 | 55 | 50 |
| Elastic Recovery of half thread in Ductilometer at 25°C, % min | 75 | 75 | 75 |
| Flash Point, °C, min | 220 | 220 | 220 |
| Separation, difference in Softening Point, °C, max | 3 | 3 | 3 |
| Test on residue - Increase in Softening Point °C, max - Reduction in Penetration at 25°C, max - Elastic Recovery of half thread in Ductilometer at 25°C of residue, % min | 5 35 50 | 6 35 50 | 7 35 50 |
| Ductility at 27°C, cm | +50 | +60 | +75 |
| Viscosity at 150°C, Poise | 3-9 | 2-6 | 1-3 |
Grades of HARVIS PMB:
- HARVIS PMB 40:Recommended for hot climatic areas.
- HARVIS PMB 70:Recommended for moderate climatic areas.
- HARVIS PMB 120:Recommended for cold climatic areas.
Advantages:
- Lower susceptibility to daily and seasonal temperature variations.
- Prevents rutting.
- High resistance to deformation at elevated pavement temperature.
- High skid resistance.
- Better adhesion between aggregate and binder ensures longer life, strength and stability.
- Better water resistance.
- Better edge resistance properties.
Application:
HARVIS PMB is ideal product for wearing courses on
- Heavy trafficked lane.
- Slopes, roundabouts, junctions.
- Industrial and multimodal platforms.
- Airport runways Parking places.
- Bridges and flyovers.
- High rainfall regions.
It is also recommended for SAMI (Stress Absorbing Membrane Interlayer) application.
To Ensure Best Results:
Recommended temperature for application
| Process | Temperature Range |
|---|---|
| Mixing with Aggregates | 170 - 185°C |
| Laying | 150-170°C |
| Compaction | Over 140°C |
| End of Compaction | 110-120°C |
