What is VG 30 bitumen?
This bitumen is primarily used for the construction of extra-heavy bitumen pavements that have to bear significant traffic loads. Bitumen VG30 is the most widely used type of bitumen in road construction, insulation, building construction industries, and also in the production of cutback bitumen. It’s better to know that this VG30 bitumen can be used instead of 60/70 penetration grade bitumen .
VG30 usage in India
VG 30 bitumen is a popular grade of bitumen in India. Indian importers prefer this type of bitumen because its performance in Indian road construction is proved. VG 30 grade bitumen is also used for plastic roads in India.
Because of having good thermal susceptibility, we use VG30 in areas that have a higher temperature. VG-30 bitumen is also suitable for use in hot and rainy weather conditions instead of bitumen penetration grades. The more viscose the bitumen, the fewer the chance of being affected by water.
The difference between VG10 and VG30
The difference between VG10 and VG-30 bitumen is in their viscosity level. Bitumen VG30 is more viscose than bitumen VG 10 and as a result, performs better in road construction in hot regions.
What are the Advantages in the Application of Viscosity Grade 30 Bitumen?
- – It is suitable for temperature above 30 ◦C
- – For a clayed soil, bitumen with higher viscosity is more suitable
- – VG30 is more suitable for road construction in a rainy weather
Specification of Bitumen Penetration Grade VG 30
TEST | METHOD | SPECIFICATION |
VG 30 | ||
Absolute viscosity at 60°C, Poises | ASTMD-2171 | Min. 2400 |
Kinematic viscosity at 135°C, cSt | ASTMD-2170 | Min. 350 |
Flash Point (Cleveland open cup)°C | ASTMD-92 | Min.220 |
Solubility in trichloroethylene,% | ASTMD-2040 | Min.99 |
Softening Point (R&B), °C | ASTMD-36 | Min.47 |
Penetration @ 25°C, 0.1mm 100gm, 5 sec | ASTMD -5 | 50-70 |
Tests on Residue from Thin Film Oven Tests/RTFOT | ||
I) Viscosity ratio at 60°C | ASTMD-2171 | Max.4.0 |
II) Ductility at 25°C, cm, after thin-film oven tests | ASTMD-113 | Min.40 |
Specific gravity @ 27/27° C | ASTMD-70 | Min.0.99 |