What is Oxidized Bitumen? Oxidized bitumen, also known as blown bitumen, is produced by passing air through penetration grades, giving it more rubbery properties than its original formula. This hard bitumen is widely used in various industries, including the piling industry, roofing felts, waterproofing, sound dampening felts, and under carriage sealant in the automotive […]
What is Oxidized Bitumen 85/40? Oxidized Bitumen 85/40, also known as blown bitumen, is a semi-solid petroleum bitumen grade resulting from air-blowing asphalt flux. The flux is normally derived by oxidizing asphalt 60/70 with hot air. 85/40 is grade referring to penetration value and the softening point of the material. Softening point is carried out […]
Oxidized Bitumen 90/40, also called blown asphalt 90/40, combines a high softening point of 85 to 95 °C with a relatively soft body of 35 to 45 dmm penetration. That pairing is unusual and it is the reason the grade exists: it holds its shape in heat like a hard grade, but still tolerates the movement […]
