What is Oxidized Bitumen 115/15?

Polycyclic aromatic hydrocarbons and blown bitumen are two types of solid oxidized grade pure petroleum bitumen that are typically employed for various construction-related applications. 70% of our capacity is devoted to Bitumen 115/15, the most oxidized bitumen that is still viable.

The semi-solid oxidized grade of pure petroleum bitumen, known as Oxidized Bitumen 115/15, is classified as a polycyclic aromatic hydrocarbon. Oxidized bitumen is typically utilized for various applications in the construction industry. Because they have been delivering bitumen products for many years, our sales team is dedicated to knowing your needs.

Oxidized bitumen 115/15 is one of the best grades. So why?

Because, The oxidation process involves blowing air through heated bitumen, which changes its molecular structure and gives it greater mechanical qualities compared to regular penetration-grade bitumen. Because of its exceptional durability, resistance to cracking, and great flexibility, oxidized bitumen 115/15 is a highly recommended option for a variety of building applications, including waterproofing and roofing. This particular grade is very useful in temperature-variable locations since it continues to function consistently even in the most adverse circumstances.

What method tests the softening point of oxidized bitumen 115/15?

To test the softening point of blown bitumen 115/15, the Ring and Ball test is commonly used. In this process, a bitumen sample is heated, and its behavior under particular conditions is observed. 

The softening point test is important because it determines how the bitumen will perform under heat stress. In hot climates or high-temperature industrial applications, this feature ensures that the material does not become excessively fluid and lose structural integrity.

Properties

Softening Point: ~115°C

Penetration: 10-20 dmm

Appearance: Solid black, shiny appearance

Stability: Chemically stable, water-resistant, UV & aging-resistant

Applications

Oxidized Bitumen 115/15 has widespread uses in:

• Waterproofing basements, roofs & tunnels
• Road patching and pavement sealing
• Coating pipes and corrosion protection
• Industrial adhesives and insulation
• Packaging of chemical containers

Because of its high softening point, it is reliable in hot climates and industrial settings where heat resistance is necessary.

Manufacturing Process

Heating: Penetration-grade bitumen is heated to ~250–300°C

Blowing Air: Controlled air flow changes molecular structure

Result: Bitumen is more elastic, harder, and heat-stable

This procedure ensures conformity with the required softening point, penetration, and resistance to aging.

Softening Point Test (Ring & Ball Method)

The Ring and Ball test is used to check the temperature resistance of Bitumen 115/15. It checks the softening point — a very important factor in assessing performance when subjected to heat stress.

115/15 vs 85/25 – What’s the Difference?

Oxidized Bitumen 115/15 and 85/25 are two common grades used in construction and waterproofing, but they serve different purposes due to their distinct physical properties. The key difference lies in their softening points and penetration values. Bitumen 115/15 has a higher softening point (around 110–115°C) and lower penetration (10–15 dmm), making it much harder, more brittle, and ideal for extremely hot climates or industrial applications requiring high thermal resistance.

On the other hand, Bitumen 85/25 has a lower softening point (about 85–90°C) and higher penetration (20–30 dmm), which gives it more flexibility and moderate hardness, suitable for general waterproofing tasks in warm to hot environments. Both grades are produced by air-blowing base bitumen 60/70, but their selection depends on the specific needs of the project regarding heat resistance and flexibility.

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Packing Options

Kraft Bags

Meltable PE Bags

Drums

Bulk Delivery

Packages are delivered solid and can be heated on-site to melt.

Storage and Handling Instructions

For bitumen product durability and performance, they should be stored in dry, shaded areas without sunlight and rain. Exposure to rain or sunlight for an extended period may affect the physical properties of the material and reduce its efficiency over a period of time.

In the proper storage environment, shelf life of the product may extend up to 10 years.

When handling the material, follow these safety protocols:

Use protective gloves to avoid direct contact with the skin.

Ensure proper ventilation in the region to prevent the inhalation of any fumes or vapors.

Avoid exposure to rain, humidity, or high temperatures, as they can harm the quality and stability of the bitumen.

Specification 

Why Use Bitumen 115/15?

Long-term strength

Heat, humidity & chemical resistance

Stable through temperature fluctuations

Eco-friendly, sustainable production

Cost-effective for major projects

 ZUMRUT INT Co. offers premium-grade bitumen, which is ideal for industrial and construction applications. With excellent durability, weather resistance, and adherence properties, our product ensures top performance in waterproofing, road construction, and roofing. Order now for competitive pricing, fast delivery, and expert support!