Description
Viscosity Grade Bitumen VG-30 is a kind of viscosity bitumen which is used in cold weather and high altitude areas. This bitumen grade is suitable for road construction in areas with an average temperature of 30 to 37 degrees Celsius.
The standard amount of penetration of bitumen of viscosity grade VG 30 is 60 mm at a temperature of 25 degrees Celsius. The absolute viscosity of VG 30 bitumen at 60 degrees Celsius is 1600 to 2400 poise.
This bitumen is used to make very heavy bitumen pavements that have to withstand a lot of traffic loads.
Application of Viscosity Grade Bitumen VG-30
The most common use of this type of bitumen is in road construction, insulation, building construction and liquid bitumen production. In terms of place of use, VG30 bitumen is more suitable for temperate climates.
In the classification based on the viscosity of bitumen according to the value of absolute viscosity at 60°C or kinematic viscosity at 135°C, the classification and direction of each of them have been determined by specific technical standards.
Absolute viscosity is expressed in poise and kinematic viscosity is expressed in centi-Stokes. Classification and characteristics of pure bitumen are reported in AASHTO-M226 and ASTM-D3381 standards.
common usages of VG-30
- Roofing
- Waterproofing
- Road Construction
- Asphalt Pavements
Specification of Viscosity Grade Bitumen VG-30
|
Characteristics |
VG-30 |
Test |
|
Kinematic Viscosity, 135˚C, CST, min |
2400 | IS1206 |
|
Flashpoint, C, Max |
350 | IS1448 |
|
Flashpoint, C, min |
220 | IS1448 |
| Solubility in trichloroethylene, %, min | 99.0 |
IS1216 |
| Penetration at 25˚C | 50-70 |
IS203 |
| Softening point, C, min | 47 |
IS1205 |
|
Tests on residue from thin film over test / RTFOT |
||
|
I. Viscosity ratio at 60˚C, max |
4.0 | IS1206 |
|
II. Ductility at 25˚C, cm, min |
40 |
IS1208 |
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