Viscosity 20 bitumen VG-20 is commonly used in areas with cold climates or high elevations. Road construction with this grade of bitumen is appropriate for regions whose average temperature is between 30 and 37 °C. Hot mix asphalt is typically made from VG20 in North India. Viscosity grade VG-20 penetration is 60mm at 25 °C as a standard. A viscosity of VG-20 bitumen at 60 degrees Celsius ranges between 1600 and 2400 poise.
|Specification||Acceptable Range||Test Method||Explanations|
|Absolute Viscosity||Min 1600||ASTM – D4402||at 60°C, Poises|
|Kinematic Viscosity||Min 300||ASTM – D4402||at 135°C, c.st|
|Solubility||99.0 Min||ASTM – D2042||in CCL4, %|
|Flash Point||220 Min||ASTM – D92||°C|
|Penetration||60-80||ASTM – D5||at 25°C, mm/10|
|Softening Point||Min 45||ASTM – D36||°C|
|Ratio Viscosity||Max 4.0||ASTM – D4402||at 60°C, %|
|Ductility||Min 50||ASTM – D113||at 25°C, cm|
This Bitumen VG 20 formulation is widely used for spraying applications, including surface-dressing and paver applications for cold climates and high-altitude regions. In addition, it is used in asphalt emulsions and modified asphalt. As a hot mix asphalt base course and wear course, this grade of bitumen is most commonly used.
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