Description of Oxidized Bitumen 90/10
Oxidized Bitumen 90/10 is an oxidized Asphalt produced by oxidizing a selected petroleum asphalts without adding the catalyst. Oxidized Bitumen 90/10 has high softening point, high flash point and it is highly stable during melting. This kind of Blown Asphalt is mostly using in the Mediterranean and specially morocco market.
Oxidized Asphalt 90/10 is produced by the air-blowing of penetration grade bitumen. This is done at high temperatures, resulting in a material of a much higher penetration index.
Oxidized Bitumen 90/10 is based on petroleum bitumen which is made by blowing bitumen 60/70 by very hot air. In addition, the numbers relate to the midpoint of the material’s softening point and penetration respectively.
The softening point value measured by the Ring and Ball method as determined by ASTM D36. Also, 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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Application of Oxidized Bitumen 90/10
Oxidized Bitumen 90/10 is produced through either staggered or continuous blowing. In it, hot air-blown penetration grade bitumen is blown under controlled air with the goal of controlling the oil content during the oxidation of the bitumen. The different grades suitable for different applications are named by two numbers that denote the midpoints of their softening point and penetration range.
Oxidized Bitumen 90/10 is extensively applied as an anti-slip layer in piling and is essential in roofing felts manufacturing, waterproofing, and roofing industries. It is also applied in sound-absorbing felts and undercarriage sealants in the automotive industry, insulating electric cable joints, serving as a joint filling compound, and being used in carpet backing. In addition, it offers corrosion protection, is used in acoustic panels, and plays a role in the manufacture of chemicals, fuels, paints, and sealant compounds, among others.
It is also effective in sealing saw cuts and joints where minimal movement is anticipated and is also paramount in the manufacturing of bituminous marine mastic required in oil and gas pipeline joints.
Storage and handling of Oxidized Bitumen 90/10
Blown Asphalt 90/10 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 of blown asphalt 90/10
Blown asphalt 90/10 should be handled with proper safety precautions to prevent health risks and workplace hazards. It must be stored in a cool, dry, and well-ventilated area away from open flames and heat sources. When heating, controlled temperatures should be maintained to avoid the release of toxic fumes, which may cause respiratory irritation. Direct skin contact should be avoided, as hot asphalt can cause severe burns and prolonged exposure may lead to dermatitis. Proper personal protective equipment (PPE), including gloves, safety goggles, and heat-resistant clothing, should be worn. In case of inhalation of fumes, affected individuals should move to fresh air immediately, and medical attention should be sought if symptoms persist.
Comparison Oxidized Bitumen 90/10 and Oxidized Bitumen 115/15
The main difference between the two types of oxidized bitumen 90/10 and 115/15 is in their softening point and application. Grade 90/10 with a softening point of around 90°C is more flexible and is more suitable for temperate regions or projects that require higher flexibility, such as insulation, roofing and some industrial applications. Due to its lower softening point, this grade performs better in variable temperatures and maintains its flexibility.
In contrast, grade 115/15 with a higher softening point of around 115°C is more resistant to heat and is suitable for tropical regions, heavy road construction projects and applications that require a harder and more resistant material. Although both grades have similar penetration values (10 and 15), their main difference is in their temperature tolerance and application conditions. The selection of the appropriate grade is based on the environmental conditions and operational needs of the project.
Packing
Blown Asphalt 90/10 is available in various packing options, including 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
| Bitumen 90/10 | Test method | Unit | Specification |
|---|---|---|---|
| Specific gravity @25/25 C | ASTM D70 | (Kg/m3) | 1.05 approx. |
| Penetration @ 25°c | ASTM D5 | mm/10 | 5/15 |
| Softening point °c | ASTM D36 | °C | 85/95 |
| Ductility @25 °c | ASTM D113 | Cm | 1.5min |
| 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 |
Why Choose Oxidized Bitumen 90/10
Oxidized Bitumen 90/10 is ideal for applications requiring enhanced flexibility and adhesion. With a softening point of around 90°C, it is widely used in waterproofing, insulation, and bituminous adhesives. Its stable form ensures long-term weather change resistance, making it an excellent choice for construction and industrial applications. Its long shelf life and environmentally friendly production process contribute to its value as a cost-effective bitumen product.
FAQs
1. What are the differences between Oxidized Bitumen 90/10 and other types of bitumen?
Blown Bitumen 90/10 has a lower softening point and higher adhesive properties, so it is suitable for lighter applications such as adhesive production and waterproofing, but may be unsuitable in heavier-duty applications where other types might suit better.
2. Is Oxidized Bitumen 90/10 suitable for extreme weather conditions?
This type of bitumen is more suitable for moderate and warm climates and may not perform optimally in extremely cold temperatures.
3. Is Oxidized Bitumen 90/10 environmentally friendly?
Yes, it can be if it is produced by manufacturers who follow environmental standards to the letter, such as ISO 14001.
