VG-20 bitumen is a grade of viscosity bitumen used in cold climatic and high altitude regions. This grade of bitumen is suitable for road construction in regions with 30 to 37 °C average temperature. In North India, VG-20 is used for road construction in hot mix asphalt.

The standard penetration value of bitumen viscosity grade VG-20 is 60 mm at 25 °C. The absolute viscosity of VG-20 bitumen is 1600 to 2400 poise at 60 °C.

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.

Bitumen VG20

No. Analysis Limit Test Method
1 Absolute Viscosity @60 ºC, Poises Min. 1600 IS 1206 (Part 2)
2 Kinematic Viscosity @135 ºC, cst Min. 300 IS 1206 (Part 3)
3 Flash Point (Cleveland Open Cup) ºC Min. 220 IS 1209
4 Solubility in Trichloroethylene, % Min. 99 IS 1206
5 Softening Point (R&B), ºC Min. 45 IS 1205
6 Penetration @25ºC, 0.1mm 100g, 5 Sec. 60-80 IS 1203
Tests on Residue from Thin Film Oven Tests / RTFOT
7 Viscosity Ratio @60ºC Max. 4.0 IS 1206 (Part 2)
8 Ductility @25̊ ºC, Cm, after thin film oven test Min. 50 IS 1208
9 Specific Gravity@27/27 ºC Min 0.99 IS 1202

* Conforms to (IS 73:2006) Specifications

Usage: Bitumen VG-20 is used for paving in high altitude and cold climate regions. it can be used for manufacturing some kind of asphalt primer & waterproofing products as well.