Oxidized Bitumen 90/15 (Blown Asphalt 90/15,Bitumen 90/15, R90/15, OXIDIZED BITUMEN 90/15) is a top-quality asphalt binder produced through the controlled oxidation process of pure bitumen. Oxidized Bitumen 90/15 is a top-quality asphalt binder produced through the controlled oxidation process of pure bitumen. R90/15 provides balanced hardness and flexibility and is known for its high softening point, making it a preferred choice for applications that require exceptional temperature resistance.