Viscosity Grade Bitumen (Asphalt) is a Bitumen grade mostly used as a Paving Grade and it’s suitable for road construction and for the asphalt pavements producing with premier attributes. VG Bitumen is usually used in the production of hot mix asphalt. Viscosity Grade Bitumen is petroleum grade bitumen, which produced from fractional vacuum bottom which comes from distillation of crude oil, which feasible appliance and behavior changes according to its temperature. Viscosity Grade bitumen is specified by ASTM Standard D3381-09 and AASHTO M226-80 (2008). VG Bitumen specifications cover by Viscosity at 60 ̊C (140 °F).

VG grade bitumen is tested and classified differently from other types of bitumen. This testing system results in the classification of bituminous products to four VG grades including VG10 Bitumen, VG20 Bitumen, VG30 Bitumen, and VG40 Bitumen.

VG 10

VG 10  is also suitable for paving roads in a very cold and cold climate instead of the old 80/100 penetration grade. As a viscosity grade bitumen, VG10 has a better performance in cold weather.

VG-20

VG-20 is used for paving in cold climate & high altitude regions.

VG30

This bitumen is primarily used for the construction of extra-heavy bitumen pavements that have to bear significant traffic loads. Bitumen VG30 is the most widely used type of bitumen in road construction, insulation, building construction industries, and also in the production of cutback bitumen.

VG30 bitumen is also suitable for use in hot and rainy weather conditions instead of 60/70 penetration bitumen grade

VG40

VG40 bitumen is used in areas in which high pressure comes from heavy traffic loads, such as intersections, near tolls booths, and truck parking lots instead of 30/40 and 40/50 penetration grade.

Viscosity Grade Bitumen is widely used in spraying applications such as surface-dressing andpaving in very cold climate. It is also used to manufactureBitumen emulsion and Modified Bitumen products.