Oxidized Bitumen 105/35 – High-Performance Blown Asphalt
RAHA Oil is a trusted supplier and exporter of Oxidized Bitumen 105/35 based in Dubai, UAE. Our premium blown asphalt offers excellent durability, adhesion, and thermal performance for a wide range of construction and industrial applications.
Oxidized Bitumen 105/35 is manufactured by passing hot air through Bitumen 60/70 under controlled conditions, transforming it into a semi-solid oxidized grade with enhanced hardness and thermal resistance. The grade designation “105/35” refers to the midpoint of its softening point (approximately 105°C) and penetration value (approximately 35, in tenths of a millimeter). Production follows either a continuous or staggered blowing process, where heated penetration-grade bitumen is blown with air under controlled conditions to reduce oil content and increase oxidation.
This grade is particularly well-suited as a hot-melt bonding compound — applied at a rate of approximately 1 kg/m² to bond preformed sheets and structures made from Bitumen 60/70.
Application of Blown Asphalt 105/35
Oxidized Grade Bitumen should be broken into small pieces and heated slowly to an application temperature of 220°C to 230°C — approximately double the temperature of its softening point — to achieve proper flow and viscosity.
Blown Asphalt 105/35 serves as an adhesive substrate for asphalt membranes and as a protective coating for metal and concrete under atmospheric conditions. It is widely used for pipeline coating, impregnating paper and board coatings, and as a bonding agent for tiles, mastics, cork plates, and roofing felt adhesives. It also serves as an adhesive for laminated boards used in electrical wire protection.
Beyond construction, Oxidized Bitumen 105/35 is used across chemical, fuel, lacquer, varnish, paper-pulp-board, and textile processing industries, as well as in road construction, pavement, paint manufacturing, crack sealing, and general civil works. Common applications include sealing and insulating buildings, construction material additives, dust-binding and impregnating agents, and raw material for rubber and plastic products.
In the automotive industry, Blown Bitumen 105/35 is used for vehicle undercoating, providing excellent waterproofing, dust protection, and noise reduction. Before application, surfaces must be dry, clean, and free of loose particles, formwork residue, curing products, or irregularities.
Oxidized Bitumen 105/35 vs. Other Oxidized Grades
Oxidized Bitumen 105/35 sits in the mid-to-hard range of the Oxidized Bitumen family, with a penetration value (30–40) that is noticeably higher than harder grades like 115/15 or 105/15 (10–20), giving it slightly more flexibility while maintaining a comparable softening point (100–110°C). This balance makes it a versatile choice for applications that need both thermal stability and workability such as adhesive bonding and pipe coating — without the brittleness of the hardest oxidized grades.
Common Industries Using Oxidized Bitumen 105/35
This grade is widely used across the waterproofing and roofing industry, oil and gas pipeline coating, adhesive and mastic manufacturing, and the automotive sector for vehicle undercoating. Its balanced hardness and flexibility also make it a preferred choice for bonding preformed asphalt sheets and structures, particularly where moderate elasticity is needed alongside strong adhesion.
Where Oxidized Bitumen 105/35 Fits in the Bitumen Family
Unlike standard penetration-grade bitumen which is primarily used as a paving binder in road construction Oxidized Bitumen 105/35 is a specialized industrial grade produced specifically for applications requiring high thermal stability and strong adhesion, such as waterproofing, roofing, pipe coating, and industrial sealants. Its air-blowing production process gives it distinct physical properties that make it unsuitable for direct road paving but ideal for the demanding industrial uses described above.
Storage and Handling Recommendations
Oxidized Bitumen 105/35 should be stored in a cool, dry area away from direct sunlight and open flames. Its high softening point allows it to remain stable at ambient temperature, simplifying long-term storage compared to softer bitumen grades. Before heating, ensure the material is broken into manageable pieces to allow even, controlled heat distribution and avoid localized overheating.
Frequently Asked Questions - FAQ
It refers to the midpoint of softening point ~105°C and penetration ~35 (0.1 mm), indicating a harder, high-heat-resistant oxidized bitumen.
Yes, its high softening point and thermal stability make it well-suited for hot and harsh environments.
Yes, we provide custom packaging and export documentation as per your requirements.
Oxidized Bitumen 105/35 — Technical Data Sheet
ASTM Standard| Property | Test Method | Unit | Specification | |
|---|---|---|---|---|
| Specific Gravity @ 25/25°C | ASTM D70 | kg/cm³ | 1.05 approx | |
| Penetration @ 25°C | ASTM D5 | 0.1 mm | 30–40 | |
| Softening Point | ASTM D36 | °C | 100–110 | |
| Loss on Heating (wt) | ASTM D6 | % | 0.2 max | |
| Flash Point | ASTM D92 | °C | 250 min | |
| Solubility in CS2 (wt) | ASTM D4 | % | 99.5 max | |
Source: Raha Group official Technical Data Sheet, Oxidized Bitumen 105/35 (ASTM standard). Values represent standard product specification; actual batch results are confirmed via Certificate of Analysis (COA) issued with each shipment.
Why Choose RAHA Oil for Oxidized Bitumen 105/35
Raha Oil manufactures Oxidized Bitumen 105/35 from Dubai, UAE, with production and testing following ASTM standards. Quality is verified through internal testing before every shipment, with full documentation including TDS, COA, and MSDS provided on request.
With flexible packing from 20 kg Kraft bags to 200 kg steel drums, including palletized options and an established export track record across the GCC, Africa, and Asia, Raha Oil supports both trial orders and large-scale industrial supply requirements.
Get Oxidized Bitumen Export Quote
Looking for a reliable Oxidized Bitumen supplier in UAE?
RAHA Oil provides competitive FOB and CFR export prices for Blown Asphalt with worldwide shipment support from Jebel Ali ports.
- SGS Inspection Available
- Worldwide Export Support
Contact our export team today for updated prices and shipment schedules.
