Definition of Oxidized Bitumen 90/15
Oxidized Bitumen 90/15 is a Semi Solid type of pure petroleum bitumen manufactured by manipulation of hot air-blowing through an asphalt flux.
The numbers 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 Standards and regulations. The penetration value is in 1/10 mm as determined by IP49 or ASTM- D5.
Oxidized Asphalt 90/15 is based on petroleum bitumen which is made by blowing grade 60/70 bitumen by hot air.
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What’s the method of production?
The oxidation process of oxidized bitumen 90/15 involves heating the bitumen to a specific temperature, typically around 250-300°C, and then blowing air through it. This process causes oxygen to react with the bitumen, leading to chemical changes that increase its viscosity, improve its aging resistance, and enhance its adhesive properties. The specific blowing time and air flow rate are carefully controlled to achieve the desired properties of oxidized bitumen 90/15. The oxidation process continues until the desired level of oxidation is reached, as determined by testing the bitumen’s properties.
Uses of Oxidized Asphalt 90/15
Oxidized Bitumen 90/15 is widely utilized in a variety of industries based on the unique properties it possesses. As such, it has a rather high viscosity and softening point and is very appropriate for application in industrial coatings and the construction of highways. During road construction, it has been used, particularly in regions that need high resistance to temperature and heavy traffic, as a strengthening agent in asphalt mixtures. It is also utilized in the waterproofing of roofs, walls, and subterranean structures to inhibit the intrusion of water into the spaces.
Moreover, this bitumen is used in the manufacture of industrial adhesives and other building materials. Because of its high adhesion, it is used for many types of adhesives and sealants in their production. This type of bitumen is applied to protective coatings for pipe and industrial equipment, where corrosion, moisture, and chemical exposure resistances are required. These characteristics will make Oxidized Bitumen 90/15 preferred for a wide range of different industrial and construction projects.
Storage and Handling of Oxidized Bitumen 90/15
Blown Asphalt 90/15 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.
Packing of Oxidized Bitumen 90/15
Blown Asphalt 90/15 is available in various packings, including bitumen 90/15, Kraft Paper Bags, Carton boxes, and Steel Drums. Mold packing is expensive but easy to remove. Polyamide bags are heat-resistant and can be filled with water for quick cooling. Craft bags are recyclable and can be loaded on or without a pallet.
Specification of Oxidized Bitumen 90/15
| Properties | Test Method | Unit | Specification |
|---|---|---|---|
| Specific gravity at 25/25 C | ASTM D70 EN 15326 | (Kg/m3) | 1.05 approx. |
| Penetration at 25°c | ASTM D5 EN 1426 | mm/10 | 10/20 |
| Softening point °c | ASTM D36 EN 1427 | °C | 85/95 |
| Loss on heating (wt) % | ASTM D6 EN 13303 | Wt. % | 0.2 max |
| Flashpoint c | ASTM D92 EN ISO 2592 | °C | 250 min |
| Solubility is CS2 (wt) % | ASTM D4 EN 12592 | Wt. % | 99.5 max |
| Stop test | A.A.S.H.O.T 102 | – | negative |
FAQs
How should Oxidized Bitumen 90/15 be stored?
Store in a cool, dry, and well-ventilated area, away from direct sunlight and ignition sources. Use sealed containers to prevent contamination.
What safety precautions should be taken during application?
Wear appropriate personal protective equipment (PPE) like gloves, goggles, and heat-resistant clothing. Ensure proper ventilation to avoid inhaling fumes. Keep fire extinguishers nearby as it is flammable at high temperatures.
What is the shelf life of Blown Bitumen 90/15?
Typically, it has a shelf life of 12 months if stored under proper conditions.
Is Blown Bitumen 90/15 environmentally friendly?
While durable and effective, it is not considered environmentally friendly due to its petroleum-based composition and potential for releasing volatile organic compounds (VOCs) during application. Proper handling and disposal are crucial.
