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 […]
Product Description Oxidized Bitumen 90/40, or blown asphalt, is a semi-solid industrial bituminous product resulting from air-blowing hot air over penetration bitumen (most typically 60/70 grade). The softening point of the bitumen is increased and its penetration value decreased through this process, so that the material can be utilized in applications requiring high heat resistance, […]
