Oxidized Bitumen 105/35 is a specific type of bitumen, a semi-solid form of petroleum, that has undergone an oxidation process. This process enhances the thermal sensitivity, consistency, softening point, and resistance to water, making it a versatile and durable material for construction and industrial applications.
Description of Oxidized Bitumen 105/35
Oxidized Bitumen 105/35 is a good grade of oxidized asphalt to use as bonding compounds as hot melt adhesive at an application rate of approximately 1 Kg/m3 to bond the preformed sheets together and to structure which is made by Bitumen 60/70 by hot air.
Nomenclature and grading for the Oxidized Bitumen products are based on a combination of temperatures. At which bitumen reaches a certain “softness” when being heated up as expressed by the ring and ball softening point test, and the penetration value In addition, the numbers relate to the midpoint of the material’s softening point and penetration respectively. for example, The numbers (105 and 35) relate to the midpoint of the material’s softening point and penetration respectively.
the 105/35 specification means :
- The first number represents the softening point in degrees Celsius (i.e., 105°C), which indicates the temperature at which the bitumen begins to soften and lose its solid state.
- The second number signifies the penetration grade (i.e., 35), which measures the depth (in tenths of a millimeter) to which a standard needle can penetrate the bitumen under specified conditions.
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Applications of Blown Bitumen 105/35
Oxidized bitumen 105/35 is the most widely used for a wide range of tasks such as road construction and hydroelectric installations, but it is also used in the oil and gas industry, the electrical sector, the flooring and mastic sector, and the roofing sector.
- Roofing and Waterproofing: This type of bitumen is frequently employed in roofing and waterproofing applications. Its high softening point ensures that it remains stable in regions with scorching temperatures. It forms the basis for roofing materials and waterproofing compounds that need to provide robust protection against water infiltration and environmental stress.
- Pavement Sealants and Coatings: Oxidized bitumen 105/35 is a crucial ingredient in pavement sealants and coatings. Its ability to resist temperature fluctuations and provide exceptional adhesion makes it a preferred choice for safeguarding asphalt pavements. These sealants extend the life of roads and parking lots by preventing water infiltration and minimizing damage from UV radiation and weathering.
- Pipe Coating: The durability and weather resistance of this bitumen make it an excellent choice for protecting pipes from corrosion. Applied as a coating, it forms a protective barrier that enhances the life expectancy of pipelines used in various industries, particularly in oil and gas.
- Joint Fillers and Expansion Joints: In the construction sector, oxidized bitumen 105/35 is used to create joint fillers and expansion joints. Its relatively high softening point ensures it remains effective, especially in hot climates, where it provides secure sealing capabilities in concrete structures subject to expansion and contraction.
- Roofing Felt and Membranes: This specialized bitumen plays a critical role in the production of roofing felt and membranes. It strengthens the overall strength and durability of these materials, ensuring they can withstand years of exposure to the elements.
- Asphalt Modification: In road construction, oxidized bitumen 105/35 can be used as a modifier in asphalt mixtures to enhance their resistance to rutting and cracking, especially in high-temperature environments.
Manufacturing Process of Oxidized Bitumen 105/35
Oxidized bitumen 150/5 is a modified bitumen produced through a controlled air-blowing process. This process involves blowing hot air through heated bitumen, causing chemical reactions that change the physical properties of the bitumen. The modified bitumen has a higher softening point, lower penetration, and enhanced resistance to weathering and aging. The Manufacturing Process of Oxidized Bitumen 105/35 has 7 steps.
1. Raw Material Preparation:
- Selection: High-quality bitumen is used as the starting material. This is typically obtained through vacuum distillation of crude oil, which separates the heavier bitumen from the lighter hydrocarbon materials.
2. Heating:
- The selected bitumen is heated to a high temperature, generally between 240°C – 260°C, in a specially designed oxidation furnace. This preheating stage prepares the bitumen for oxidation and ensures uniform temperature distribution during the blowing process.
3. Air Blowing:
- Hot air is blown through the heated bitumen at a controlled rate and temperature. The air acts as a catalyst, initiating chemical reactions within the bitumen molecules. These reactions lead to the formation of new chemical bonds, which alter the molecular structure of the bitumen.
4. Cooling:
- After air blowing, the oxidized bitumen is cooled to a controlled temperature. This prevents further oxidation reactions and stabilizes the modified bitumen.
5. Filtering:
- The cooled oxidized bitumen is passed through a filter system to remove impurities and ensure a clean, consistent product.
6. Mixing and Blending:
- Oxidized bitumen 105/35 is often blended with other additives, such as stabilizers or polymers, to further enhance its properties and tailor it for specific applications.
7. Storage and Packaging:
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Storage: The oxidized bitumen is stored in heated tanks to maintain its viscosity and prevent hardening.
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Packaging: The oxidized bitumen is packaged in various forms, such as drums, bags, or pails, depending on the desired size and handling requirements.
8. Quality Control:
- Testing: Regular quality control tests are conducted to ensure that the oxidized bitumen meets the specified standards for properties such as softening point, penetration, and viscosity.
Properties of Oxidized Bitumen 105/35
Oxidized bitumen 105/35, also known as blown bitumen, is a type of bitumen that has been modified through an oxidation process. Here are some of the key properties of oxidized bitumen 105/35:
- Softening Point: The softening point of oxidized bitumen 105/35 is relatively high, typically around 105°C. This high softening point makes it suitable for applications where elevated temperatures are expected, such as roofing and pavement applications.
- Penetration: Penetration is a measure of bitumen’s hardness, and in the case of oxidized bitumen 105/35, it has a relatively low penetration value. This means it is harder and less viscous compared to other types of bitumen.
- Durability: Oxidized bitumen 105/35 exhibits good durability and resistance to weathering, making it suitable for outdoor applications. It can withstand the effects of ultraviolet (UV) radiation, temperature fluctuations, and moisture.
- Adhesion: It has good adhesion properties, making it suitable for use in roofing and waterproofing applications. It adheres well to various surfaces, providing a reliable barrier against water and moisture infiltration.
- Flexibility: While it is harder than conventional bitumen, oxidized bitumen 105/35 still retains a degree of flexibility. This flexibility allows it to withstand thermal expansion and contraction without cracking.
- Aging: Over time, oxidized bitumen 105/35 may continue to harden and become more brittle. Proper storage and maintenance are essential to extend its useful life and maintain its properties.
- Thermal Stability: This type of bitumen exhibits good thermal stability, which means it can resist softening or melting at high temperatures, making it suitable for areas with extreme weather conditions.
- Chemical Resistance: Oxidized bitumen 105/35 is resistant to a variety of chemicals, which makes it suitable for industrial applications where it may come into contact with various substances.
- Application: It is commonly used in roofing, waterproofing, and other construction applications. It is also used as a bonding agent, joint sealant, and for corrosion protection in certain industrial processes.
- Compatibility: Oxidized bitumen 105/35 is often used in combination with other materials, such as aggregates or polymers, to enhance its performance and adapt it to specific project requirements.
Advantages and Disadvantages of Blown Bitumen 105/35
Advantages of Oxidized Bitumen 105/35:
- Enhanced Durability: Oxidized bitumen 105/35 exhibits superior durability compared to conventional bitumen due to the air-blowing process it undergoes. The oxidation reactions strengthen the molecular structure of the bitumen, making it more resistant to cracking, deformation, and aging. This enhanced durability makes oxidized bitumen an ideal choice for long-lasting applications, such as road construction, roofing, and waterproofing.
- Weather Resistance: Oxidized bitumen 105/35 is remarkably resistant to the effects of weather, including extreme temperatures, sunlight, and moisture. Its higher softening point allows it to withstand high temperatures without softening or melting, while its low penetration ensures it remains flexible and durable in cold conditions. Moreover, the air-blowing process imparts weather resistance properties, making the bitumen less susceptible to cracking, erosion, and degradation caused by exposure to natural elements.
Disadvantages of Oxidized Bitumen 105/35:
- Environmental Impact: The production of oxidized bitumen 105/35 involves the use of fossil fuels, which contribute to greenhouse gas emissions and environmental pollution. Additionally, the manufacturing process may generate volatile organic compounds (VOCs), which can be harmful to air quality. Efforts to reduce environmental impact include using cleaner production techniques, implementing energy-efficient practices, and minimizing waste generation.
- Cost Considerations: Oxidized bitumen 105/35 is generally more expensive than conventional bitumen due to the additional processing steps involved. However, the long-lasting performance and reduced maintenance costs associated with oxidized bitumen can offset the initial higher investment. Considering the overall lifespan of the application and the potential for savings in future repairs, oxidized bitumen can prove to be a more cost-effective option in the long run.
Benefits of Blown Bitumen 105/35
- Durability: Its high softening point and relatively low penetration value ensure it can withstand a wide range of temperatures and environmental conditions, providing long-lasting performance.
- Resistance to Weathering: Oxidized bitumen 105/35 demonstrates impressive resistance to weathering, UV radiation, and other environmental factors, making it an ideal choice for applications exposed to the elements.
- Superior Adhesion: It provides excellent adhesion to various surfaces, ensuring a secure and effective seal, which is a critical aspect of many construction applications.
- Versatility: Its compatibility with a broad spectrum of materials and applications adds to its versatility and value in construction and infrastructure projects.
Some Examples of infrastructure projects using Oxidized Bitumen 105/35
- The Burj Khalifa in Dubai : The tallest building in the world, located in Dubai, United Arab Emirates, utilized Oxidized Bitumen 105/35 in its waterproofing system. The high softening point and enhanced adhesive properties of this bitumen grade made it suitable for protecting the building’s foundation from moisture ingress, ensuring its structural integrity.
- The Hong Kong-Zhuhai-Macao Bridge: This 55-kilometer bridge-tunnel system, which connects Hong Kong, Zhuhai, and Macao, utilized Oxidized Bitumen 105/35 in its asphalt pavements. The project required a durable and weather-resistant binder to withstand the harsh marine environment and heavy traffic loads. Oxidized Bitumen 105/35 proved to be the ideal choice, ensuring the long-term performance of the bridge’s road surface.
- The Channel Tunnel: The Channel Tunnel, which connects the United Kingdom and France, used Oxidized Bitumen 105/35 in its waterproofing membrane. The tunnel, situated underwater, required a robust and reliable waterproofing solution to prevent leaks and maintain a safe environment for rail traffic. Oxidized Bitumen 105/35 provided the necessary barrier against water penetration, contributing to the tunnel’s long-term durability.
Safety & Health of Oxidized Bitumen
workers should comply with these tips:
- Ventilation: workers anywhere working should have appropriate Ventilation Because Oxidized Bitumen can release fumes when heated, which can be harmful if inhaled.
- Protective Equipment: workers should use heat-resistant gloves, safety shoes, long-sleeved shirts, long trousers, and safety goggles.
- Fire Safety: Workers work with high temperatures for this reason Keep bitumen away from open flames or sparks and have appropriate fire extinguishing equipment on hand.
Packing of Blown Bitumen 105/35
Bitukim is a manufacturer of oxidized Asphalt 105/35 in various packing, including:
- Meltable Polyamide Bags in (20&25 Kg)
- Carton Box in (20,25&40 Kg)
- Kraft Bags in (20,25&40 Kg)
- Blocks in (20,25&40 Kg)
- Drums in (20&25 Kg)
Capacity of Loading Container
25kg PP Bag: Palletized and Shrink Wrapped
Loading 920 Bag in 20ft Container= 23 Ton Net
25kg Carton Box- Palletized and Shrink Wrapped
Loading 880 Carton Box in 20ft Container= 22 Ton Net
Specification of Oxidized Bitumen 105/35
| BITUMEN 105/35 | TEST METHOD | UNIT | SPECIFICATION |
|---|---|---|---|
| Specific gravity @ 25/25 °c | ASTM D70 | Kg/cm³ | 1.05 approx |
| Penetration @ 25°c | ASTM D5 | mm/10 | 30-40 |
| Softening point °c | ASTM D36 | °C | 100-110 |
| Loss on heating(wt) % | ASTM D6 | wt % | 0.2 max |
| Flashpoint °c | ASTM D92 | °C | 250 min |
| Solubility is CS2(wt) % | ASTM D4 | wt % | 99.5 max |
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