What is AC-2.5 bitumen?
AC-2.5 bitumen is the softest grade in the asphalt cement viscosity classification, carrying a target viscosity of 250 poises at 60°C. Measured on original, unaged binder, AC-2.5 bitumen offers exceptional flexibility, making it ideal for cold-climate paving where crack resistance matters more than heat stability.
Engineers specify AC-2.5 bitumen for roads in cold regions, high-altitude areas, and locations prone to freeze-thaw cycles and low-temperature cracking. Its soft, pliable consistency allows AC-2.5 bitumen to absorb thermal stress without brittleness, ensuring long-term pavement performance in climates where colder-grade binders are essential year-round.
Black Rock Bitumen supplies AC-2.5 bitumen manufactured to ASTM D3381 standards, ensuring consistent viscosity, penetration, and quality across every shipment. Backed by strict testing and dependable global logistics, our AC-2.5 bitumen gives contractors a trusted, cold-weather-ready binder for demanding road construction projects.



