Bitumen Viscosity Grade

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 Bitumen Viscosity Grade

Blackstar Viscosity Grade bitumen are specified by the two methods of grading, Blackstar Standard Viscosity Grade, Blackstar Viscosity Grade Bitumen.

Bitumen-Viscosity-Grade, Blackstar Bitumen Viscosity GradeBlackstar 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.

PropertyUnitsVG-10 VG-20VG-30 VG-40 Test Methods
Penetration at 25°C, 100g, 5sec, Min 0.1MM80 60 4535IS 1203
Absolute viscosity at 60°CP 800-1200 1600-2400 2400-3600 3200-4800 IS 1206 (Part 2)
Kinematic viscosity at 135°C, MincSt 250 300 350400 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 99IS 1216
Softening point (R&B), Min°C 404547 50 IS 1205
Tests on residue from thin film oven test:
- Viscosity ratio at 60°C, Max4 44 4 IS 1206 (Part 2)
- Ductility at 25°C, MinCM 75504025IS 1208
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