Description of Oxidized Bitumen 90/40
Oxidized Bitumen 90/40 is a semi-solid grade of pure petroleum bitumen manufactured by air-blowing through an asphalt flux. Special physical properties of its grade can be used in different applications in the construction business. Oxidized bitumen 90/40 is based on petroleum bitumen which is made by Bitumen 60/70 by very hot air. 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. The penetration value is 1/10 mm as determined by IP49 or ASTM D5.
Oxidized Asphalt is a solid or semi-black solid material and gradually liquid when heated, oxidized asphalt is the predominant content of bitumen, asphalt, molten (oils), and aromatic resins. The oxidized asphalt or blown asphalt is producing in different softening points and penetration.
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Applications of Oxidized Bitumen 90/40
Industrial Coatings
Oxidized Bitumen 90/40 is extensively applied in the protection of many industrial applications. Pipelines, steel, and electrical apparatus are coated with it to offer resistance against corrosion, moisture, and chemicals. Its excellent adhesion and durability make it ideal for the protection of equipment and structures under extreme conditions.
Road Construction
In road construction, Oxidized Bitumen 90/40 increases the durability and strength of asphalt. It is used to enhance the stability of asphalt mixtures, especially in areas that are under heavy traffic. It also acts as a very good crack filler and sealing material, preventing water seepage and increasing road life.
Waterproofing
This grade of oxidized bitumen is incredibly effective in waterproofing applications, especially for roofing and underground constructions. Its water and weather resistance makes this material very important to the manufacture of waterproofing membranes and damp-proof coatings for concrete and other surfaces that ensure reliable protection in service over time.
Adhesive Manufacturing
Oxidized Bitumen 90/40 is applied in the production of industrial adhesives. With a high softening point and strong bonding capability, it is used in the formulation of durable and flexible adhesives for construction, automotive, and manufacturing applications.
Storage and Handling of Oxidized Bitumen 90/40
Blown asphalt 90/40 has 10 years validity with multi-time heating and cooling, please refer to MSDS.
Health & safety of blown asphalt 90/40
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 90/40
Oxidized Bitumen 90/40 is available in various packages as per requirements of customers, including:
- 20 Kg and 50 Kg Kraft Paper Bags
- 25 Kg Carton Boxes
- 150 Kg, 180 Kg, and 200 Kg Steel Drums
Of the above, the 25 Kg mold packaging is the most expensive; however, it is designed to be easily taken out.
These 25 Kg polyamide bags are resistant to heat and can also be brought down to lower temperatures quickly by filling the bags with water. Thus, they are quite efficient to handle and store.
Also, 25 Kg kraft paper bags are reusable and contain a unique coating that keeps bitumen from sticking with the package. Such bags can be loaded onto pallets or without pallets, thus providing an alternative during transport and storage.
Specification 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 |
FAQs
1. What is the difference between Oxidized Bitumen 90/40 and other types of oxidized bitumen?
Compared to other types of oxidized bitumen, Oxidized Bitumen 90/40 has a high viscosity with a high softening point. Therefore, these features are excellent for tough applications, especially for road construction and industrial coating. Furthermore, this kind of bitumen is recommended for projects with more resistance that can endure higher temperatures and poor weather conditions.
2. Is Oxidized Bitumen 90/40 suitable to use in cold climates?
Blown Bitumen 90/40 works best in warm and moderate climates because of its specific properties. However, due to its structure and high resistance to temperature changes, it can also be used in cold regions, though it is not the best option for extremely low temperatures, where cracking could occur.
3. Does Blown Bitumen 90/40 have environmental certifications?
Yes, most of the well-known manufacturers of Oxidized Bitumen 90/40 do provide environmental certifications such as ISO 14001 or similar standards. These certifications mean that the product is manufactured according to environmental standards and has less harm to the environment. For an eco-friendly product, it is recommended to ask for relevant certifications from the supplier.
