VISCOSITY GRADE BITUMEN (VG Grade) is a classification system used to grade bitumen based on its viscosity at 60°C. The Bureau of Indian Standards (BIS) revised the IS-73-1992 specifications to establish four grades: VG-10, VG-20, VG-30, and VG-40. In the revision, certain qualification tests such as specific gravity, water content, ductility, loss on heating, and fire's breaking point were eliminated, as they do not directly impact the product's performance.
Viscosity Grade Bitumen finds extensive use in spraying applications, particularly in surface-dressing and paving projects conducted in very cold climates. It is also utilized in the manufacturing of bitumen emulsion and modified bitumen products.
Laira Group, an experienced and reliable distributor, is a pioneer in the distribution of Viscosity Grade Bitumen. With their expertise and trusted sources, they provide high-quality VG Grade Bitumen to meet the diverse needs of construction projects.
-
SPECIFICATION FOR VISCOSITY GRADE BITUMEN PROPERTY RANGE
VG-10 VG-20 VG-30 VG-40 ABSOLUTE VISCOSITY 60°C POISE MIN
800 1000 2400 3200 KINEYATIC VISCOSITY 135°C CST MIN
250 100 350 400 FLASH POINT MIN°C
220 220 220 220 SOFTENING POINT MIN °C
40 45 47 50 PENETRATION 0.1 MIN.25 °C
80-100 60-80 50-70 40-60 DVCTILITY ON MIN .25°C
75 50 40 25 VICOSITY RATIO 60°C MAX
4 4 4 4 SOLURILITY IN TCE MIN
99 99 99 99
Conclusion
The specifications for viscosity grade bitumen are as follows:
- VG-10: Absolute Viscosity 60°C Poise min - 800, Kinematic Viscosity 135°C CST min - 250, Flash Point min °C - 220, Softening Point min °C - 40, Penetration 0.1 min 25°C - 80-100, Ductility on min 25°C - 75, Viscosity Ratio 60°C max - 4, Solubility in TCE min - 99.
- VG-20: Absolute Viscosity 60°C Poise min - 1000, Kinematic Viscosity 135°C CST min - 100, Flash Point min °C - 220, Softening Point min °C - 45, Penetration 0.1 min 25°C - 60-80, Ductility on min 25°C - 50, Viscosity Ratio 60°C max - 4, Solubility in TCE min - 99.
- VG-30: Absolute Viscosity 60°C Poise min - 2400, Kinematic Viscosity 135°C CST min - 350, Flash Point min °C - 220, Softening Point min °C - 47, Penetration 0.1 min 25°C - 50-70, Ductility on min 25°C - 40, Viscosity Ratio 60°C max - 4, Solubility in TCE min - 99.
- VG-40: Absolute Viscosity 60°C Poise min - 3200, Kinematic Viscosity 135°C CST min - 400, Flash Point min °C - 220, Softening Point min °C - 50, Penetration 0.1 min 25°C - 40-60, Ductility on min 25°C - 25, Viscosity Ratio 60°C max - 4, Solubility in TCE min - 99.
These specifications provide information about the properties of viscosity grade bitumen, including its viscosity at different temperatures, flash point, softening point, penetration, ductility, viscosity ratio, and solubility in TCE. They help in ensuring the quality and performance of bitumen in various applications such as road construction and pavement.