Oxidized Bitumen 75/30 is a refined bitumen produced by controlled air-blowing of penetration-grade bitumen. This modification process changes its chemical structure, resulting in a product with a higher softening point and lower penetration rate. It becomes semi-solid at room temperature and gains resistance to deformation, water, and aging. This makes it highly suitable for construction and industrial processes where temperature stability and durability are essential.
Thanks to its chemical stability, water resistance, and durability, Oxidized Bitumen 75/30 plays a vital role in multiple industries. Below are the most important applications with detailed insights:
Oxidized Bitumen 75/30 forms a resilient and watertight layer when applied as a membrane. It adheres well to concrete and metal surfaces, preventing water seepage in roofs, basements, and tunnels. Its resistance to UV rays and temperature fluctuations enhances membrane longevity.
In construction, this bitumen grade is used as a filler for expansion joints in bridges, runways, and industrial floors. Its hardness and elasticity allow it to absorb structural movements while preventing water and debris from entering the joints.
Due to its strong bonding properties and thermal resistance, Oxidized Bitumen 75/30 is used in formulating industrial adhesives. These adhesives are applied in flooring, automotive sound dampening, and insulation materials, providing both grip and durability.
In the oil and gas industry, this grade is used as a corrosion-resistant coating for buried steel pipelines. It provides an impermeable barrier against moisture, chemicals, and soil contaminants. The coating ensures long-term pipe integrity and reduces maintenance costs.
Its dielectric properties make it suitable for insulating electrical components like capacitors, circuit boards, and cable sleeves. The high softening point prevents thermal deformation, while chemical resistance offers protection from solvents and oils.
Oxidized Bitumen 75/30 is also a key ingredient in manufacturing roofing felt and shingles. Its low volatility and high adhesion help secure mineral granules to the felt, creating a long-lasting and weather-resistant roof surface.
Oxidized Bitumen 75/30 is used in waterproofing membranes, adhesives, pipeline coatings, electrical insulation, and expansion joints. Its high softening point and thermal stability make it ideal for applications that involve heat and moisture exposure.
Unlike standard bitumen, Blown Asphalt 75/30 is air-blown to achieve higher softening points and lower penetration. This gives it more rigidity, heat resistance, and aging durability, making it suitable for industrial applications.
Yes, Bitumen 75/30 is often used in roofing felt and modified bitumen membranes. It bonds well to surfaces, resists UV radiation, and prevents water intrusion, making it an excellent roofing material for hot and humid climates.
While it is petroleum-based, Blown Asphalt 75/30 is non-toxic and non-soluble in water. When used properly, it poses minimal environmental risk. Many manufacturers are also exploring recycling options for bituminous waste materials.
When handling Oxidized Asphalt 75/30, use heat-resistant gloves and safety gear. Always apply it in well-ventilated areas and avoid direct contact with skin or eyes. Make sure to store it in a cool, dry location away from open flames.
Oxidized Bitumen 75/30 is a premium bituminous material that combines performance, durability, and versatility. Its balanced properties make it indispensable across roofing, sealing, insulation, and infrastructure sectors. Thanks to its chemical resistance and thermal reliability, it meets the needs of modern industrial and construction projects.
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