Viscosity Grade Bitumen (VG GRADE)
Description
To grade the bitumen based on viscosity BIS revised IS-73-1992specifications (Viscosity at 60°C) and as such there are four grades VG-10, VG-20, VG-30 & VG-40. A few qualification tests like specificgravity, water content, ductility, loss on heating &Farass breaking point were removed from IS:73-1992 as these tests do not have any relationship with the performance of the product.
Application
Viscosity Grade Bitumen is widely used in spraying applications such as surface-dressing andpaving in very cold climate. It is also used to manufactureBitumen emulsion and Modified Bitumen products.
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
|
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