Description of Oxidized Bitumen 85/40 Oxidized bitumen 85/40 (in other words, oxidized bitumen 85/40, blown bitumen 85/40) is Semi Solid grade of pure petroleum bitumen manufactured by air-blowing through an asphalt flux. Special physical properties of its grade can be used in different applications in the construction business. Oxidized bitumen 85/40 is based on petroleum […]