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 manufactured using either a continuous or staggered blowing process. Heated Penetration Grade Bitumen is blown with air in a controlled setting to manage the oil content in the bitumen as it oxidizes. The various grades for appropriate applications are identified by two numbers that represent the midpoints of their softening point and penetration ranges.
Oxidized bitumen 90/10 is widely used as an anti-slip layer compound in the piling industry, for the manufacture of roofing felts, the roofing and waterproofing industries, for sound dampening felts and under carriage sealant in the automotive industry, electric cable joint protection, joint filling compound, carpet-backing, corrosion protection, acoustic panels, chemical, fuel, paint manufacturing, sealant compound, and many other applications.
Also used in sealing saw cuts and joints where expected movements are minimum. It is also used in the manufacturing of bituminous marine mastic for the oil & gas pipeline joints. Further, Oxidized Bitumen is used in the manufacture of bituminous marine mastic, which is required for the 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
Workers should wear protective masks, gloves, and goggles during application. The asphalt can be removed from equipment and tools with kerosene or gasoline.
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 |
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.
