VG 20 BITUMENVG-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.
VG 20 bitumen is the softest grade of viscosity bitumen.
|Absolute Viscosity 60°C, Poises, min||800||1600||2400||3200|
|Kinematic Viscosity, 135°C, CST, min||250||300||350||400|
|Flash point, C, min||220||220||220||220|
|Solubility in trichloroethylene, %, min||99||99||99||99|
|Penetration at 25°C||80-100||60||50-70||40-60|
|Softening point, C, min||40||45||47||25|
|Viscosity ratio at 60°C, max||4||40||4||4|
|Ductility at 25°C, cm, min, after thin film over test||75||50||40||25|