Description of Oxidized Bitumen 85/40
Oxidized Bitumen 85/40, also known as Blown Bitumen, is bitumen that has been chemically altered through a process called oxidation. This involves blowing air through the bitumen at high temperatures to increase its hardness and viscosity.
The numbers 85/40 relate to the midpoint of the material’s softening point and penetration respectively. The softening point value is the degrees Centigrade measured by the Ring and Ball method as determined by ASTM D36. The penetration value is 1/10 mm as determined by IP49 or ASTM D5.
Bitumen Malaysia guarantees the quality of our oxidized bitumen 85/40 with the arrangement of the international inspector to check the quality and quantity of the oxidized bitumen 85/40 during the loading to the vessel and controlling the production by QC by batch test report before shipping. Bitumen Malaysia guarantees the quality to meet ASTM standards.
It is known to use bituminous compositions as pavings and coverings for a variety of surfaces, for example, roads and airfields. Such compositions comprise mixtures of aggregate and bitumen in specific proportions and are generally laid and compacted while hot to provide a dense and durable surface. For many applications, bitumen provides a sufficiently durable and adhesive binder for the aggregate.
For high-load applications, however, additives may be added to the oxidized bitumen 85/40 in order to improve its mechanical properties. Various additives have been proposed for this purpose, including polymers such as ethylene and vinyl acetate copolymers, random or block copolymers of styrene, and conjugated dienes.
Properties of Oxidized Bitumen 85/40
- Penetration Range: The numbers 85/40 refer to the penetration range in tenths of a millimeter at 25°C. For 85/40, the penetration is typically between 80-90 dmm, indicating a harder grade compared to softer bitumens.
- Softening Point: Typically, the softening point of Oxidized Bitumen 85/40 is around 40°C. This determines the temperature at which the bitumen becomes soft.
- Viscosity: This grade has a high viscosity, making it suitable for applications requiring strong adhesion and durability.
- Elasticity: Exhibits improved elasticity and resistance to deformation under load.
Uses of Blown Asphalt 85/40
Blown Asphalt 85/40, also known as Oxidized Bitumen 85/40, has various specialized uses due to its unique properties derived from the oxidation process. Here are some key applications and benefits of Blown Asphalt 85/40:
1. Roofing
- Modified Bitumen Membranes: Commonly used in the production of modified bitumen roofing membranes. The high viscosity and durability make it ideal for creating layers that are resistant to weather and UV degradation.
- Roof Coatings: Applied as a coating to enhance waterproofing and protection against environmental factors.
2. Waterproofing
- Foundations: Used in waterproofing solutions for foundations, basement walls, and underground structures. It provides a reliable barrier against moisture ingress.
- Damp-Proofing: Effective in damp-proofing applications for various construction projects, ensuring protection against groundwater and moisture.
3. Road Construction and Paving
- Road Surfacing: Employed in road construction for its strong adhesive properties and resistance to deformation under heavy traffic loads. It improves the durability of road surfaces.
- Paving: Used in paving applications where high load-bearing capacity and resistance to environmental conditions are required.
4. Insulation
- Thermal Insulation: In some cases, blown asphalt 85/40 is used as an insulating material in construction due to its thermal properties. It helps in maintaining temperature stability in buildings.
5. Adhesives and Sealants
- Industrial Adhesives: Utilized in the formulation of industrial adhesives and sealants. The high viscosity and adhesive strength of Blown Asphalt 85/40 contribute to effective bonding in various applications.
- Joint Sealants: Applied as a sealant in construction joints and seams to provide a durable and weather-resistant seal.
6. Construction Materials
- Composite Materials: Incorporated into composite materials used in construction, enhancing their durability and resistance to environmental factors.
- Specialty Products: Used in the production of various specialty products where high durability and resistance to aging are required.
7. Waterproofing Membranes
- Pre-Fabricated Membranes: Utilized in the production of pre-fabricated waterproofing membranes. These membranes are used in roofing systems, foundation waterproofing, and other applications requiring reliable moisture protection.
Application of Oxidized Asphalt 85/40
- Roofing: Used in roofing materials like modified bitumen membranes due to its durability and resistance to weather conditions.
- Waterproofing: Applied in waterproofing systems for foundations and structures because of its high resistance to water penetration.
- Road Construction: Utilized in areas where high durability is needed, such as heavy traffic zones.
- Paving: Employed in paving applications to provide a stable surface with good load-bearing capacity.
Advantages of Oxidized Bitumen 85/40
- High Purity Oxidized Bitumen (Oxidised Bitumen) without Using Gilsonite and any other impurities
- Excellent and permanent adhesive
- Low water absorption
- Chemically stable
- Flexibility
- Impact-resistant
- High Resistant to soil stress
- High Resistant to cold stress
- High electrical resistance.
- Quality assured manufacture.
- Conforms to ASTM standards with regards to softening point and penetration.
- Competitive and fair price
- Prompt and on-time Delivery
- Third-party Inspection by Customer request
- Weatherproof OXIDIZED BITUMEN packaging for flexibility of storage.
- Various Kinds of BLOWN BITUMEN packing according to Customer’s Purpose. (Meltable Bag, Kraft Bag, Carton Box, Block, Keg, Drum)
- High Monthly Capacity for producing OXIDIZED BITUMEN.
- OXIDIZED BITUMEN meltable polyamide bag packages wrapping can be melted in conventional boilers without the need for removal
- BLOWN ASPHALT Carton Boxes packing have a non-stick insider layer that removes easily on Bitumen
- Full Coverage and support
Guaranty/warranty of blown bitumen 85/40
We guarantee the quality of blown bitumen 85/40 with the arrangement of an international inspector to check the quality and quantity of the bitumen on each shipment during the loading to the vessel and control the production by the QC team via batch test report before shipping.
How to Apply oxidized bitumen 85/40
Bitumen Oxidized bitumen 85/40 must be heated with double temperature against the softening point to be able to have flow and viscosity. Before applying oxidized bitumen 85/40, clean and dry the surface from any loose particles, formwork, curing products, irregularities, slurry, and any dirt.
Recommendations for Handling / Storage
Handling Recommendations
- Protective Gear
- Wear Appropriate PPE: Use personal protective equipment (PPE) such as gloves, safety goggles, and protective clothing to prevent contact with the hot bitumen and its fumes.
- Temperature Control
- Avoid High Temperatures: Handle the material at temperatures recommended by the manufacturer. Excessive heat can alter its properties or lead to safety hazards.
- Equipment
- Use Suitable Tools: Utilize tools and equipment designed for handling bitumen, such as specialized pumps and hoses, to avoid contamination and ensure efficient transfer.
- Ventilation
- Ensure Proper Ventilation: Work in well-ventilated areas to disperse any fumes or vapors that may be emitted during handling.
- Avoid Spills
- Prevent Spills: Handle with care to avoid spills. In case of a spill, follow the spill response procedures and clean up promptly.
- Training
- Educate Personnel: Ensure that personnel handling the material are trained in proper handling techniques and safety procedures.
Storage Recommendations
- Storage Conditions
- Cool, Dry Place: Store Blown Asphalt 85/40 in a cool, dry environment to maintain its properties. Avoid exposure to direct sunlight and extreme temperatures.
- Temperature Range: Store within the temperature range specified by the manufacturer to prevent degradation or softening.
- Containers
- Use Appropriate Containers: Store in sealed, labeled containers that are compatible with bitumen. Ensure containers are kept tightly closed when not in use.
- Avoid Contamination
- Prevent Contamination: Keep the storage area clean and free from contaminants that could affect the bitumen. Avoid contact with substances that could compromise its quality.
- Safety Measures
- Fire Safety: Store away from flammable materials and ensure that appropriate fire suppression equipment is readily available.
- Signage: Use proper signage to indicate the presence of bitumen and associated hazards.
- Inventory Management
- First-In-First-Out: Use a first-in-first-out (FIFO) inventory system to ensure that older stock is used before newer stock. This helps in maintaining product quality and reducing waste.
- Inspection
- Regular Checks: Periodically inspect the storage conditions and containers for any signs of damage or deterioration. Ensure that the bitumen remains within its specified quality standards.
- Handling Procedures
- Follow Manufacturer Guidelines: Always adhere to the manufacturer’s specific handling and storage recommendations to ensure optimal performance and safety.
Oxidized Bitumen 85/40 quality
Bitumen quality Over many years, Shell has investigated the relationship between laboratory-measured properties of penetration-grade bitumens and their performance in asphalt on the road. The ability to predict the long-term behavior of asphalts becomes more important as traffic loading has increased and performance requirements have become ever more demanding.
Performance on the road depends on many factors, including the design, the nature of the application, and the quality of the individual components. In volumetric terms, oxidized bitumen 85/40 is a relatively minor component of asphalt, but it has a crucial role – acting both as a durable binder and conferring visco-elastic properties on the asphalt. Essentially, satisfactory performance of bitumen on the road can be ensured if four properties are controlled: Rheology, Cohesion, Adhesion, and Durability.
Comparisons with Other Bitumen Grades
- Vs. 60/70: Oxidized Bitumen 85/40 is harder and more viscous compared to the softer 60/70 grade, making it more suitable for heavy-duty applications.
- Vs. 90/40: While both are used for similar applications, Oxidized Bitumen 85/40 is slightly softer than 90/40, affecting its performance characteristics.
Safety
- Handling: Requires careful handling due to high temperatures during production.
- Recycling: Efforts are underway to improve the recyclability of bitumen products.
- Sustainability: Research into more sustainable production methods and alternative materials is ongoing.
Packing of oxidized bitumen 85/40
A few types of packing is available for customers’ purpose and conveniences. Bitumen Malaysia manufactures oxidized bitumen 85/40 and packed different types of packaging including Kraft bags, meltable plastic bags, drums, and bulk.
Oxidized bitumen 85/40 is a penetration-grade bitumen, which is blown by hot air in a controlled process until the desired specification is reached. Bitumen Malaysia can supply oxidized bitumen in any grade and is designated by two numbers to show the softening point and penetration ranges.
The bitumen grade 85/40 means the softening point is 85 °C and penetration is 40 desi millimeters. They are produced in compliance and conformity with ASTM standard and meets the following specification.
- Meltable Polyamide Bags (20 Kg) (25 Kg)
- Carton Box (20 Kg) (25 Kg) (40 Kg)
- Kraft Bags (20 Kg) (25 Kg) (40 Kg)
- Blocks (20 Kg) (25 Kg) (40 Kg)
- Drums (20 Kg) (25 Kg)
Technical DAta sheet of oxidized bitumen 85/40
| BITUMEN 85/40 | TEST METHOD | UNIT | SPECIFICATION |
|---|---|---|---|
| Specific gravity @ 25/25 °c | ASTM D70 | Kg/cm³ | 1.05 approx |
| Penetration @ 25°c | ASTM D5 | mm/10 | 35-40 |
| Softening point °c | ASTM D36 | °C | 80-90 |
| Ductility @ 25°c | ASTM D113 | cm | 3 min |
| Loss on heating(wt) % | ASTM D6 | wt % | 0.2 max |
| Flashpoint °c | ASTM D92 | °C | 260 min |
| Solubility is CS2(wt) % | ASTM D4 | wt % | 99 max |
| Spot test | A.a.s.h.o.t102 | - | Negative |
