Oxidized Bitumen

Oxidized bitumen is produced by blowing hot air with temperatures of 200 to 300 degrees Celsius into the reactor of the refinery’s BBUs, in order to obtain penetration grade bitumen. In comparison with pure bitumen, this product has a lower penetration grade and a higher melting point. A low, medium or hard oxidized bitumen is classified according to its softening point and penetration grade.

As bitumen is heated in the reactor, oxygen atoms of air react with hydrogen atoms of bitumen. As a result, some steam is generated which should be removed from the oxidation chamber. Therefore, the Oxidized bitumen remains.

There are various grades of oxidized bitumen.

  • Low oxidized bitumen grades:

75/25, 75/30, 85/25, 85/40, 95/25, 90/40

  • Medium grades:

90/10, 90/15

  • hard oxidized bitumen

115/15, 110/15, 105/5, 105/15, 105/35 and 150/5





Oxidized bitumen application

Oxidized bitumen is used in many industries such as road construction, hydropower, roofing, flooring, masonry, oil and gas, and electrical applications.

  • Road construction, paving, and road maintenance can be accomplished with this type of bitumen. Asphalts used on roads, highways, railroads, and parking lots can be made with it as an additive with a binder
  • Oxidized bitumen is a commonly used material for canal linings. In addition to the construction of embankments and dams, the use of bitumen can also be found in the construction of hydraulic structures, the protection of dams, and the stabilization of sand dunes
  • As a roofing felt, shingle roof, damp proof coating composition, carriage roof compound, liquid roof coating, or plastic cement, oxidized bitumen can be used. The most common use for oxidized bitumen is waterproofing.
  • Oxidized bitumen can be used as flooring. Bitumen mastic, which is acid and alkali proof, is a corrosion prevention material used in many industries such as chemical, fertilizer, steel, and woodworking. Additionally, oxidized can be used to fix parquet flooring.
  • Laminated boards are bonded with oxidized bitumen. Besides sealing electrical junction boxes, it also adheres to fabrics. Wires, batteries, and cables can all use too.


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Oxidized bitumen advantages

Among oxidized bitumen’s main benefits are the following:

  • High durability
  • Chemical stability
  • High flexibility
  • Completely waterproof

What is oxidized bitumen used for?

Oxidized Bitumen is used primarily as a sealant for undercarriages in the automobile industry as part of anti-slip compounds. Besides being used in manufacturing roofing felts and sound dampening felts, it is also used as a sealant compound and as a joint filler compound.

How do I make oxidized bitumen?

By using the Continuous Blowing Process or Staggered Blowing Process, Oxidized Bitumen is produced. It is blown with air in the Chimney/Tower to heat Penetration Grade Bitumen up to 300 degrees Celsius. By oxidizing the bitumen, the oil content in it is removed.

What is blown-type bitumen?

By blowing air to pure bitumen, oxidized bitumen is produced. Therefore oxidized bitumen is also called blown bitumen. The penetration grade is lower than pure bitumen, and its softening point is higher.

What is bitumen and its types?

Bitumen emulsions are classified into three types, slow setting (SS), medium setting (MS), and rapid setting (RS). The type of emulsifying agent determines the level of stability. At ambient temperature, it can be sprayed or mixed with aggregates for road construction, and it will start to bind right away.

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