Oxidized bitumen 90/40 is a high-performance grade designed for demanding applications requiring exceptional stiffness, durability, and resistance to deformation. With a softening point of 85–95°C and a penetration value of 35–45 dmm, this grade provides the structural integrity needed for heavy-load industrial uses, flexible sealing compounds, and durable waterproofing systems.

Understanding the 90/40 Grade

The 90/40 grade offers a unique combination of high softening point and moderate penetration, providing a material that remains stable under elevated temperatures while maintaining sufficient flexibility for demanding applications. Its viscoelastic properties make it a top choice for flexible sealing compounds, expansion joints, and damp-proofing layers. The material is also known as blown asphalt 90/40 and is classified as a semi-solid grade of pure petroleum bitumen.

Key Properties of 90/40 Grade

Applications of Oxidized Bitumen 90/40

Expansion Joints and Flexible Seals
The viscoelastic properties of 90/40 grade make it ideal for expansion joints and flexible seals in bridges, roads, and industrial structures. Its combination of high softening point and moderate flexibility is particularly suited for bridge joints, road expansion joints, and airport runways.

Pipe Coatings and Duct Linings
90/40 grade is widely used for pipe coatings and duct linings, providing corrosion resistance and waterproofing protection. It functions as a hard, water-impervious barrier when used to line steel pipes, tanks, and industrial machinery.

Waterproofing Membranes
This grade is used in flexible waterproofing systems and roofing applications. It is employed in protective coatings for metals and as a component in roofing and waterproofing systems.

Asphalt Modification
90/40 grade is used in asphalt modification for low-traffic roads, providing enhanced durability and resistance to deformation.

Industrial Applications

• Chemical processing and bitumen coatings

• Paints, lacquers, and varnishes

• Paper-pulp-board and textile processing

• Road construction, pavement, and crack sealing

• Sound dampening and electrical insulation

Protective Coatings for Metals

90/40 grade is widely used to line steel pipes, tanks, and industrial machinery, where it functions as a hard, water-impervious barrier. This application is critical for protecting industrial infrastructure from corrosion and environmental degradation.

Advantages of 90/40 Grade

Superior Stiffness
The high softening point provides excellent resistance to deformation under load and elevated temperatures.

Excellent Adhesion
Good adhesion to most substrates ensures reliable performance in demanding applications.

Chemical Resistance
The material offers resistance to chemicals and aggressive environments.

Versatility
Suitable for both construction and industrial applications.

Future Outlook

The 90/40 grade is expected to see growing demand in heavy-load industrial applications, infrastructure projects, and protective coating systems. Its exceptional stiffness and durability make it indispensable for critical infrastructure protection.

View Oxidized Bitumen 90/40 Applications

• chemical dust suppressants market
• long steel product market
• nutraceutical packaging market