What is Oxidized Bitumen 90/15? Oxidized Bitumen 90/15 is a semi-solid, thermoplastic petroleum bitumen product. It is made by blowing hot air into penetration-grade bitumen (usually 60/70), which yields a product of higher viscosity, thermal stability, and high adhesion. The numbers 90/15 represent its softening point (around 90°C) and penetration value (15 dmm), according to […]
