Oxidized bitumen 90/40

 

General Description of Oxidized Bitumen 90/40

Oxidized bitumen 90/40, also known as oxidized asphalt 90/40, is a type of asphalt that has undergone a controlled air-blowing process, resulting in modified properties. The numbers “90/40” typically denote the penetration and softening point characteristics of the asphalt. In this case, “90” indicates the penetration value (lower values signify harder asphalt), while “40” represents the softening point in degrees Celsius.

  • General characteristics of blown asphalt 90/40 include:
  • Increased Hardness
  • Higher Softening Point
  • Enhanced Weather Resistance
  • Waterproofing Properties
  • Versatility

Why should oxidized bitumen 90/40 be used?

Oxidized Bitumen 90/40 is widely used due to its unique physical and chemical properties, making it well-suited for specific industrial and construction applications. Here are the main reasons to choose Oxidized Bitumen 90/40:

  1. High Softening Point and Flexibility
    With a softening point around 90°C and a penetration grade of 40, Oxidized Bitumen 90/40 strikes an ideal balance between hardness and flexibility. This characteristic enables it to withstand high temperatures without becoming overly soft, making it suitable for regions with warmer climates or applications requiring heat resistance.
  2. Exceptional Waterproofing Properties
    Oxidized Bitumen 90/40 has excellent water resistance, providing effective protection against moisture. This makes it ideal for waterproofing membranes, roofing materials, and foundations, as it protects structures from water infiltration and damage over time.
  3. Durable and Long-Lasting
    The oxidation process makes this bitumen grade more resistant to degradation and aging caused by UV exposure and oxidation. This durability extends its life span and reduces maintenance needs, making it a cost-effective choice for long-term applications.
  4. Excellent Adhesion
    Oxidized Bitumen 90/40 has a strong adhesive quality, making it effective for bonding materials like concrete, wood, and metals. This property is particularly valuable in construction, pipe coatings, and asphalt modifiers, where firm adhesion is necessary.
  5. Thermal and Chemical Stability
    This grade of bitumen exhibits high resistance to thermal changes, making it less prone to cracking or softening under fluctuating temperatures. Its chemical stability further protects it from damage due to harsh environmental conditions or exposure to chemicals, making it suitable for demanding applications.

Uses of Oxidized Bitumen 90/40

Oxidized Bitumen 90/40, with its modified properties, finds several applications across different industries. Some common uses include:

  • Roofing: Blown asphalt 90/40 is often used as a waterproofing agent in roofing materials. Its enhanced durability and weather resistance make it suitable for both residential and commercial roofing applications.
  • Pavement Sealing: It is utilized in pavement sealing to improve the durability and longevity of asphalt surfaces. Blown asphalt 90/40 helps to fill cracks and seal the pavement, protecting it from moisture and environmental damage.
  • Waterproofing: Blown asphalt 90/40 is applied to various surfaces, including foundations, basements, and concrete structures, to provide effective waterproofing and protect against water infiltration and damage.
  • Pipe Coating: It is used for coating pipelines to protect against corrosion and environmental factors. Blown asphalt 90/40 forms a durable barrier that helps extend the lifespan of the pipes and ensures the integrity of the infrastructure.
  • Soundproofing: Blown asphalt 90/40 is employed as a soundproofing material in construction projects, helping to reduce noise transmission and improve acoustic insulation in buildings and structures.
  • Adhesives: It is used as an adhesive in various industries, including automotive, construction, and manufacturing. Blown asphalt 90/40 provides strong bonding properties and is often incorporated into adhesive formulations for various applications.

The difference between oxidized bitumen 90/40and other grades of oxidized bitumen

Differences from Other Grades:

  1. Penetration:Lower Penetration Grades: Grades like 85/25 or 95/25 have lower penetration values ​​(e.g., 25), making them harder than 90/40. They are used where higher resistance to deformation is needed.
    Higher Penetration Grades: Grades like 75/25 have higher penetration values, meaning they are softer and may be more flexible under certain conditions.
  2. Softening Point:Lower Softening Point: Grades like 85/25 or 75/25 have lower softening points (e.g., 25°C), making them softer and more prone to deformation in higher temperatures.
    Higher Softening Point: Grades like 150/5 have very high softening points (e.g., 150°C), making them suitable for very high-temperature applications, but they tend to be quite hard and brittle.
  3. Key applications:90/40 is typically used in industrial applications such as roofing, pipe coating, and waterproofing, where both heat resistance and durability are required. Lower penetration and higher softening point grades (like 150/5) are used where higher heat resistance is necessary, while lower softening point grades (like 85/25) are suited for areas with milder climates.

Packing of Oxidized Bitumen 90/40

ZUMRUT Co is the manufacturer of Blown Asphalt 90/40 in various packing, including bitumen 90/40 is available in 20 & 50 kg Kraft Paper Bags / Poly Amide Bags, 25 kg Carton box and 150, 180, 200kg Steel Drums. In addition, oxidized bitumen packing also palletize, 40 bags can stack on the pallet. 20 pallet can load to the 20ft container.

Oxidized bitumen 90/40

Recommendations for Handling / Storage Blown Asphalt 90/40

Handling and storing Blown Asphalt 90/40 requires careful attention to ensure its quality and usability. Here are some recommendations:

  • Storage Temperature: Store Blown Asphalt 90/40 in a covered area away from direct sunlight and heat sources to prevent overheating and degradation. The recommended storage temperature is typically between 15°C to 25°C (59°F to 77°F).
  • Avoid Contamination: Prevent contamination by storing Blown Asphalt 90/40 away from substances such as solvents, fuels, and acids. Ensure the storage area is clean and free from debris.
  • Ventilation: Ensure adequate ventilation in the storage area to prevent the accumulation of fumes and maintain a safe working environment.
  • Protection from Moisture: Protect the material from moisture by storing it in sealed containers or tanks. Moisture can degrade the quality of Blown Asphalt 90/40 and affect its performance in asphalt mixtures.
  • Handling Precautions: When handling Blown Asphalt 90/40, use appropriate personal protective equipment, including gloves, safety glasses, and protective clothing, to prevent skin contact and inhalation of fumes.
  • Avoid Overheating: Do not expose Blown Asphalt 90/40 to temperatures above its softening point during storage or handling to prevent premature aging and degradation.
  • Segregation Prevention: Avoid segregation during transportation and handling by using proper equipment and procedures to maintain uniformity and consistency of the material.

Technical Advantages of Blown Asphalt 90/40

Blown Asphalt 90/40 offers several technical advantages:

  1. High Softening Point : Blown asphalt has a higher softening point compared to regular asphalt, making it suitable for applications requiring greater resistance to temperature fluctuations and deformation.
  2. Improved Durability : Its enhanced properties contribute to improved durability, making it ideal for heavy traffic areas and extreme weather conditions.
  3. Enhanced Cohesion and Adhesion : Blown asphalt exhibits improved cohesion and adhesion properties, resulting in better bonding with aggregates and surfaces, leading to longer-lasting pavements.
  4. Resistance to Aging and Oxidation : Blown asphalt tends to resist aging and oxidation better than conventional asphalt, prolonging the life of pavement surfaces.
  5. Flexibility and Versatility : It offers flexibility in formulation and application, allowing for customized blends tailored to specific project requirements.
  6. Reduced Rutting and Rutting Resistance : Blown asphalt’s higher viscosity and stiffness help reduce rutting, enhancing the overall performance of asphalt pavements.

Technical Data Sheet of Blown Asphalt 90/40

Bitumen 90/40 Test method Unit Specification
Specific gravity @25/25 C ASTM D70 (Kg/m3) 1.05 approx.
Penetration @ 25°c ASTM  D5 mm/10 35/45
Softening point °c ASTM  D36 °C 85/95
Ductility @25 °c ASTM  D113 Cm 5.5min
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
Spot test A.A.S.H.O.T102 Negative

 

Oxidized bitumen 90/40

Technical Datasheet of Blown Bitumen 90-40