Description of Oxidized Bitumen 105/35
Oxidized bitumen 105/35 is semi solid grade of pure petroleum bitumen manufactured by air-blowing through an asphalt flux. In fact, Oxidized asphalt 105/35 is based on petroleum bitumen which is made by blowing grade 105/35 bitumen by hot air.
Oxidized Asphalt 105/35 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 105/35 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. 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. 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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How is the oxidation process of bitumen 105/35 carried out?
Through the correct selection of the crude oil feed stock and operating conditions, oxidized bitumen 105/35 with a particular specification can often be produced directly from the distillation process. It may be necessary to ‘air blow’ the short residue in order to further modify its physical properties. An oxidation process involves passing air through the short residue either batch-wise or continuously, while the short residue is heated between 240 and 3208 degrees Celsius. As a result of blowing, small molecules with relatively low molecular weight are converted into larger molecules with relatively higher molecular weight. In the end, an air-blown bitumen is less susceptible to temperature changes since it penetrates less easily and develops a higher softening point.
Uses of Oxidized Bitumen 105/35
The most majority of bitumen 105/35 used in asphalt for road construction is conventional bitumen; that is why it is often known as paving grade. The term ‘pen grade’ is short for penetration grade and reflects the fact that this type of bitumen 105/35 product is often classified (in Europe and parts of Asia) using the penetration test.
Oxidized Grade Bitumen is broken into small pieces and heated gradually to an application temperature of 220ºC to 230ºC. Blown asphalt serves as an aesthetic adhesive substrate for asphalt membranes, metal, and concrete protective coatings under atmospheric conditions. Oxidized Bitumen 105/35 is utilized for pipeline coating, impregnating paper and board coatings, and as a bonding agent for tiles, mastic, cork plates, and roofing felts. Additionally, it acts as an adhesive for laminated boards, protecting electrical wires. Hard asphalt grades are ideal for sealing saw cuts and joints with minimal movement, offering a wide temperature range to prevent bleeding in high-temperature applications. Oxidized asphalt is also extensively used in industrial applications such as roofing, flooring, mastics, pipe coatings, and electrical insulation.
Difference between Oxidized Bitumen 105/35 and 90/40
The difference between Oxidized Bitumen 105/35 and 90/40 is the degree of softening point and penetration. The 105/35 grade has a higher softening point, at 105°C, and is more resistant to heat; therefore, it is suitable for use in high-temperature areas for road construction. The 90/40 has a relatively lower softening point, which allows for more flexibility, hence its application in roofing and general construction, where moderate flexibility and resistance to heat are required.
Moreover, the 90/40 grade has a slightly higher penetration value, making it more pliable compared to the stiffer 105/35.
Storage and handling of Oxidized Bitumen 105/35
Blown asphalt 105/35 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 sunshine.
Health & Safety of Oxidized Asphalt 105/35
Workers should wear protective masks, gloves, and goggles during application. The asphalt can be removed from equipment and tools with kerosene or gasoline.
How is this bitumen packaged?
We supply Blown Bitumen 105/35 in various packaging formats to meet a wide range of customers’ needs:
Heat-resistant, easy to handle 25 Kg Polyamide Bag, Recyclable 25 Kg. Craft the bag with a special lining to prevent sticking, and ideal for bulk transportation, come the 200 Kg Steel Drums.
Specification of oxidized bitumen 105/35
| Bitumen 105/35 | 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 | 100/110 |
| 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 |
| Specific gravity @25/25 C | ASTM D70 | (Kg/m3) | 1.05 approx. |
FAQs
1. Can Oxidized Bitumen 105/35 be recycled?
Yes, oxidized bitumen is recyclable. It can be reprocessed for use in industrial and construction applications.
2. How is Blown Asphalt 105/35 transported safely?
It is packed in heat-resistant and durable packaging, such as 25 Kg Polyamide Bags, Craft Bags, or Steel Drums, ensuring safe and efficient transportation.
3. Does Oxidized Bitumen 105/35 have a shelf life?
Yes, when stored properly under dry and sheltered conditions, it has a shelf life of up to 10 years.
4. Can Blown Asphalt 105/35 be used in cold climates?
While it is primarily designed for high-temperature applications, it also performs well in cold climates due to its flexibility and resistance to cracking.
