VG 20 BITUMEN

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.

VG 20 bitumen is the softest grade of viscosity bitumen.

CHARACTERISTICS		VG-10	VG-20	VG-30	VG-40
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