Oxidized Bitumen also known as hard bitumen, blown bitumen, bitumen oxide and hard asphalt. It produced by passing air through the penetration grades. This process cases bitumen be more rubbery than its original formula. Oxidized Bitumen 90/15 and other grades are simply harder bitumen. Hard bitumen under controlled temperature conditions is widely used as an anti-slip layer compound in the piling industry, for manufacture of roofing felts, the roofing and waterproofing industries, for sound dampening felts and under carriage sealant in the automotive industry, electric cable joint protection, joint filling compound, sealant compound and many others. Also used in sealing saw cuts and joints where expected movements are minimum. It is also used in the manufacturing of bituminous marine mastic for the oil & gas pipeline joints.