lown Bitumen 105/35 – Full Product Description
Blown Bitumen 105/35, also known as Oxidized Bitumen 105/35, is a semi-solid industrial bitumen produced by blowing hot air through penetration grade bitumen under controlled processing conditions. This oxidation process alters the chemical and physical structure of the base bitumen, increasing its softening point and improving its thermal stability, durability, and resistance to environmental factors.
The grade 105/35 indicates a softening point of approximately 105°C and a penetration value of 35 (0.1 mm at 25°C). This combination provides a balanced material with moderate hardness and enhanced flexibility, making Blown Bitumen 105/35 suitable for applications that require both thermal resistance and workability.
Blown Bitumen 105/35 is typically manufactured from high-quality penetration grade bitumen such as Bitumen 60/70. During production, molten bitumen is subjected to a controlled flow of hot air in oxidation reactors. The process parameters, including temperature, airflow rate, and oxidation time, are precisely regulated to achieve uniform properties and consistent quality across all batches.
One of the main advantages of Blown Bitumen 105/35 is its improved resistance to flow at elevated temperatures compared to penetration grade bitumen. This property allows it to maintain structural stability in warm climates and under continuous heat exposure. At the same time, its relatively higher penetration value provides sufficient flexibility for coating, sealing, and insulation applications.
Blown Bitumen 105/35 exhibits excellent adhesion to a wide range of surfaces, including concrete, metal, masonry, and wood. This strong bonding capability makes it a preferred material for waterproofing systems, roofing layers, and protective coatings. Once applied, it forms a durable, water-resistant barrier that protects surfaces from moisture ingress and environmental damage.
In roofing applications, Blown Bitumen 105/35 is widely used in the manufacture of roofing felts, membranes, and bituminous sheets. Its ability to withstand high surface temperatures without excessive softening ensures long-term performance and dimensional stability, especially in regions with high solar exposure.
For pipe coating and corrosion protection, Blown Bitumen 105/35 provides effective resistance against moisture, soil chemicals, and atmospheric corrosion. When applied as a coating or wrapping compound, it creates a continuous protective layer that extends the service life of pipelines, tanks, and steel structures used in oil, gas, water, and industrial systems.
Blown Bitumen 105/35 is also commonly used in industrial insulation applications. It helps reduce heat loss and protect equipment such as storage tanks, vessels, ducts, and pipelines operating at moderate to high temperatures. The material maintains its integrity under thermal stress and contributes to improved energy efficiency.
In the paint and coating industry, Blown Bitumen 105/35 serves as a raw material for bituminous paints, primers, and protective coatings. These coatings are applied to metal structures, bridges, roofs, and industrial facilities to provide long-lasting protection against corrosion, weathering, and chemical exposure. The grade’s balanced hardness allows for smooth application and good film formation.
The sealing and adhesive properties of Blown Bitumen 105/35 make it suitable for use in joint sealing, crack filling, and construction adhesives. It is commonly applied in expansion joints, pavement maintenance, and civil engineering projects where flexibility, durability, and resistance to environmental changes are required.
Blown Bitumen 105/35 can also be used in hydraulic and civil engineering works, including canal lining, water containment structures, and foundation protection. Its waterproofing performance and resistance to water pressure make it effective for preventing leakage and structural deterioration in water-related infrastructure.
For application, Blown Bitumen 105/35 should be heated gradually using suitable heating equipment to achieve the required viscosity. Controlled heating ensures proper application and prevents degradation of the material. Once applied correctly, the product delivers reliable performance and a long service life.
Blown Bitumen 105/35 should be stored in a dry, covered area away from direct sunlight, rain, and moisture. Proper storage conditions help preserve its physical properties and ensure consistent quality over time. When stored correctly, the product maintains a long shelf life.
The product is available in multiple packaging options to suit different project and logistics requirements, including 25 kg meltable bags, kraft bags, steel drums, jumbo bags, and bulk supply. Palletized packing is commonly used for container loading to ensure safe transportation and efficient handling during export.
Blown Bitumen 105/35 is produced in accordance with ASTM international standards and undergoes strict quality control testing, including softening point, penetration, ductility, flash point, solubility, and loss on heating. These tests ensure that the product meets global quality requirements and performs reliably in demanding applications.
Due to its versatility, stability, and cost-effectiveness, Blown Bitumen 105/35 is widely used and exported for construction, industrial manufacturing, infrastructure development, and maintenance projects. It is a trusted choice for applications requiring a combination of heat resistance, flexibility, and long-term durability.
