Bitumen VG40
VG-40 (Viscosity Grade 40) Bitumen is a high-performance paving grade bitumen designed for heavy-duty asphalt applications exposed to intense traffic loads and high temperature stresses. This grade is engineered to provide superior resistance against rutting, deformation, and fatigue, making it the optimal choice for regions with hot climates and for surfaces that carry heavy commercial vehicles, trucks, and industrial transport.
Compared to lower VG grades, VG-40 exhibits significantly higher viscosity and stiffness, resulting in greater durability, reduced maintenance requirements, and enhanced structural life of asphalt pavements.
Bitumen VG 40 Specification
| Bitumen VG-40 Specification | |||
|---|---|---|---|
| Specification | Unit | Value | Test Method |
| Absolute Viscosity at 60°C | Poise | Min 3200 | ASTM D4402 |
| Kinematic Viscosity at 135°C | CST | Min 400 | ASTM D2170 |
| Flash Point | °C | Min 220 | ASTM D93 |
| Solubility in Trichloroethylene | % wt | Min 99 | ASTM D2042 |
| Penetration Value at 25°C | 0.1 mm | 40–60 | ASTM D5 |
| Softening Point | °C | Min 25 | ASTM D36 |
| Thin-Film Oven Test (TFOT) | |||
| Viscosity Ratio at 60°C | – | Max 4 | ASTM D4402 |
| Ductility at 25°C (After TFOT) | cm | Min 25 | ASTM D113 |
