Overview – VG40 Viscosity Grade Bitumen
VG40 Bitumen is the hardest viscosity grade available in the VG series, designed for use in high-stress environments such as expressways, heavy-duty highways, industrial zones, and container terminals. Its high viscosity at 60°C ensures exceptional load-bearing capacity, making it ideal for regions with extremely high traffic volumes and heavy axle loads. VG40 provides excellent resistance to rutting, deformation, and fatigue under extreme conditions.
Viscosity Measurement and Technical Classification
Bitumen viscosity is measured using viscometers such as Brookfield or Saybolt Furol under standardized conditions—typically at 60°C and 135°C—according to ASTM and IS:73 protocols. VG40 has a significantly higher resistance to flow compared to VG10, VG20, or VG30, ensuring durability even in intense heat and load conditions. This high viscosity not only improves the structural integrity of road surfaces but also enhances long-term performance and stability.
Applications and Global Export
VG40 is the preferred choice for highways with heavy truck movement, industrial paving, and airport runways. Its superior performance under stress makes it a reliable solution for infrastructure in hot climates or where maximum durability is essential. At iranbitumen, we offer VG40 Bitumen in export-standard drums, jumbo bags, and bitutainers with full quality certifications. Whether you’re looking to buy bitumen for large-scale government projects or need a trusted bitumen dealer to export VG40 globally, we provide end-to-end solutions with secure logistics and flexible payment terms.