Bitumen viscosity grade is introduced by Subhan Ibrahim Enterprises, which is Top Bitumen importer in Pakistan. The typical grade of Bitumen generally used as a Paving Grade Bitumen that is appropriate for the construction of roads and for the asphalt pavements production with better properties. We are the best bitumen wholesalers in Pakistan who provides quality bitumen products only. The viscosity grade of Bitumen is primarily used in the production of hot mix asphalt for bases and wearing courses, and possesses features and attributes that unique sand is quite different from other agents. They attain very flexible relations with other materials which are used by the certified bitumen manufacturer in Pakistan.
Where to use Bitumen Viscosity Grade
- Blackstar VG-10 BITUMEN:
It is commonly used by spraying applications for example surface-dressing and paving in very cold climate condition. It is also used in the production of the Bitumen Emulsion and other Bitumen products. - Blackstar VG-20 BITUMEN:
It is used for paving in cold climate condition and high altitude areas. - Blackstar VG-30 BITUMEN:
It is mostly used in the construction of extra heavy duty Bitumen pavements that need to undergo extensive traffic loads. - BLackstar VG-40 BITUMEN:
It is used in extremely stressed areas for example crossroads, near toll booths and truck parking. Since it’s higher in viscosity, stiffer or hard mixes of Bitumen can be manufactured to improve resistance to shoving and many other issues related with higher temperature and heavy traffic loads.
Blackstar uses Viscosity Grade bitumen as it is a basic engineering parameter. Its temperature susceptibility can be clarified because viscosity is measured at three distinctive temperatures by the bitumen manufacturer in Pakistan. This means that Viscosity grades bitumen are appropriate for a different types of temperatures. In our asphalt plant in Pakistan testing equipment and standards are commonly available. As we calculate the viscosity values at two temperatures, we could provide to the users and bitumen suppliers in Pakistan rational and correct asphalt mixing temperatures.
| Property | Units | VG-10 | VG-20 | VG-30 | VG-40 | Test Methods |
|---|---|---|---|---|---|---|
| Penetration at 25°C, 100g, 5sec, Min | 0.1MM | 80 | 60 | 45 | 35 | IS 1203 |
| Absolute viscosity at 60°C | P | 800-1200 | 1600-2400 | 2400-3600 | 3200-4800 | IS 1206 (Part 2) |
| Kinematic viscosity at 135°C, Min | cSt | 250 | 300 | 350 | 400 | IS 1206 (Part 3) |
| Flash point (Cleveland open cup), Min | °C | 220 | 220 | 220 | 220 | IS 1448 [P : 69] |
| Solubility in trichloroethylene, Min | %Wt | 99 | 99 | 99 | 99 | IS 1216 |
| Softening point (R&B), Min | °C | 40 | 45 | 47 | 50 | IS 1205 |
| Tests on residue from thin film oven test: | ||||||
| - Viscosity ratio at 60°C, Max | 4 | 4 | 4 | 4 | IS 1206 (Part 2) |
|
| - Ductility at 25°C, Min | CM | 75 | 50 | 40 | 25 | IS 1208 |