Description of Oxidized Bitumen 85/35
Oxidized Bitumen 85/35 is semi solid grade of pure petroleum bitumen manufactured by air-blowing through an asphalt flux. In fact, Oxidized asphalt 85/35 is based on petroleum bitumen which is made by blowing grade 60/70 bitumen by hot air. Oxidized Asphalt 85/35 is produced by either Continuous or Staggered Blowing Process. Heated Penetration Grade Bitumen under controlled environment is blown with air which controls the Oil Content in the Bitumen while it oxidized.
Oxidized Asphalt 85/35 is the semi-solid oxidized grade of pure petroleum bitumen categorized in polycyclic aromatic hydrocarbons is normally used for different purposes in the construction business. The softening point value is the degrees Centigrade measured by the Ring and Ball method as determined by ASTM D36.
The penetration value is in 1/10 mm as determined by IP49 or ASTM -D5. Oxidized bitumen has a higher softening point than viscosity grade and penetration bitumen. Consequently, oxidized bitumen is less susceptible than penetration bitumen and viscosity bitumen to temperature changes.
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Uses of Oxidized Bitumen 85/35
Oxidized bitumen 85/35 is used in the chemical, fuel, paints, lacquers, varnishes, paper-pulp-board, textile processing, road construction, pavement, crack seal and repairmen, civil works, roofing, and construction industries; sealing and insulating buildings, adhesive, construction materials additive, dust-binding, coating, insulating and impregnating agent, and the manufacture of rubber and plastic products. Blown asphalt 85/35 products are used for paving and roofing, as well as in asphalt-based paints for metal corrosion protection, lining public works structures, adhesives in electrical laminates, and as a base for synthetic turf. Oxidized asphalt 85/35 is commonly used for roofing, pipe coating, Portland cement pavement, hydraulic applications, and paint manufacturing.
Storage and Handling
Blown asphalt 85/35 is best up to 10 years from the day it was manufactured. It is suggested for higher time of warehouse keeping to keep the bitumen under shelter and out of the rain and sun shine.
Health & Safety
Workers should wear protective masks, gloves, and goggles during application. The asphalt can be removed from equipment and tools with kerosene or gasoline.
Advantages of blown asphalt 85/35
- Durability
- Flexibility
- Water Resistant
- Chemical Stability
Packing of Oxidized Bitumen 85/35
Blown Asphalt 85/35 is available in various packaging options, including 20 and 50 Kg Kraft paper bags, 25 Kg carton boxes, and 150, 180, and 200 Kg steel drums. The 25 Kg mold packing is the most expensive option, featuring a removable carton mold for easy handling at the destination. The 25 Kg polyamide bag is heat-resistant and allows for quick cooling by direct water filling, though the polyamide cannot be separated from the bitumen after use. The 25 Kg Kraft bag is recyclable, with a special lining to prevent bitumen from sticking, and can be loaded with or without pallets for customer convenience.
Specification of Oxidized Bitumen 85/35
| Bitumen 85/35 | Test method | Unit | Specification |
|---|---|---|---|
| Specific gravity @25/25 °C | ASTM D70 | (Kg/m3) | 1.05 approx. |
| Penetration @25 °C | ASTM D5 | mm/10 | 30/40 |
| Softening point °C | ASTM D36 | °C | 80/90 |
| Ductility @25 °C | ASTM D113 | Cm | 1.5min |
| Loss on heating (wt) % | ASTM D6 | Wt. % | 0.2 max |
| Flash point °C | ASTM D92 | °C | 250 min |
| Solubility is CS2 (wt) % | ASTM D4 | Wt. % | 99.5 max |
| Spot test | A.A.S.H.T.O 102 | — | Negative |
