🔥 Understanding Oxidized Bitumen and Its Applications

Oxidized Bitumen, also known as Blown bitumen, Blown asphalt, Oxidized asphalt or air-blown bitumen, is a specially treated form of bitumen that undergoes an oxidation process. This process alters its chemical structure, resulting in a stiffer, more temperature-resistant material.

Widely used in construction, waterproofing, and industrial sectors, oxidized bitumen is known for its durability, high softening point, and resistance to aging.

In this article, we will delve into the characteristics, applications, and benefits of Oxidized Bitumen.

🧪 Understanding What is Oxidized Bitumen?

Oxidized Bitumen is manufactured by passing hot air through standard bitumen, which causes partial oxidation. This changes its physical properties, giving it a higher softening point and lower penetration rate compared to regular bitumen.

Key Properties:

• High softening point (above 85°C)

• Low penetration

• High viscosity

• Excellent water resistance

• Non-volatile and chemically stable

Characteristics of Oxidized Bitumen

Oxidized Bitumen exhibits distinct characteristics due to the oxidation process it undergoes. Some key features include:

Increased Hardness and Viscosity

The oxidation process leads to an increase in the hardness and viscosity of the bitumen. This results in a stiffer material that is less prone to deformation and has improved resistance to temperature variations.

Higher Softening Point

Oxidized Bitumen has a higher softening point compared to regular bitumen. This means it can withstand higher temperatures without becoming soft or losing its shape, making it suitable for applications where high-temperature resistance is required.

Enhanced Aging Resistance

The oxidation process imparts improved aging resistance to Oxidized Bitumen. It becomes more resistant to the effects of weathering, such as UV radiation, oxidation, and thermal degradation, ensuring better long-term performance.

Improved Adhesive Properties

Oxidized Bitumen exhibits enhanced adhesive properties, making it ideal for applications that require strong adhesion. It can adhere well to various surfaces, including aggregates, metals, and roofing materials, providing reliable bonding.

🏭 How is Oxidized Bitumen Produced?

The production involves heating bitumen to approximately 240–300°C and injecting air into the mixture. The oxidation process introduces oxygen atoms into the bitumen chains, increasing molecular weight and improving rigidity.

This process results in grades like:

• Bitumen 85/25

• Bitumen 90/40

• Bitumen 115/15

These numbers represent softening point and penetration, e.g., 115/15 means 115°C softening point, 15 dmm penetration.

🏗️ Applications of Oxidized Bitumen

Oxidized bitumen is valued in many industrial and construction settings:

🧱 1. Waterproofing

The increased hardness and temperature resistance make it suitable for withstanding weathering and ensuring long-lasting waterproofing solutions.

✅ Used for basement sealing, foundation protection, and underground structures.

🏠 2. Roofing

Oxidized Bitumen is extensively used in the roofing industry. It is applied as a coating or membrane to protect roofs, foundations, and other structures from water penetration.

✅ Ideal for roof membranes, shingles, and felt due to its excellent UV resistance and longevity.

🏗️ 3. Pipe Coating

✅ Protects metal pipes against corrosion and moisture in industrial environments.

🖇️ 4. Electrical Insulation

✅ Acts as an insulating compound in electrical panels and transformers.

🛢️ 5. Asphalt Products

Oxidized Bitumen is employed in road construction and pavement maintenance projects. It is used as a binder to produce durable asphalt mixtures that can withstand heavy traffic loads and harsh weather conditions. The increased hardness and aging resistance of Oxidized Bitumen contribute to the longevity and performance of road surfaces.

✅ Used in asphalt sheets, joint fillers, and sealants in road construction.

Oxidized Bitumen finds wide-ranging applications across different industries due to its unique properties. Some common applications include:

Joint Filling and Crack Sealing

Oxidized Bitumen is utilized for joint filling and crack sealing in various applications. It can be applied to fill gaps and cracks in concrete structures, asphalt pavements, and expansion joints. The adhesive properties and increased viscosity of Oxidized Bitumen ensure effective sealing, preventing further damage and extending the lifespan of the structures.

Paints, Coatings, and Sealants

Oxidized Bitumen is a key ingredient in the production of paints, coatings, and sealants. It is used to enhance the viscosity and durability of these products. Oxidized Bitumen-based paints and coatings provide excellent protection against corrosion, water penetration, and UV radiation, making them suitable for industrial and infrastructure applications.

📊 Comparison Table – Oxidized Bitumen vs. Penetration Grade Bitumen

Benefits of Oxidized Bitumen

Oxidized Bitumen offers several benefits that make it a preferred choice in various applications. Some advantages include:

Increased Weather Resistance

Oxidized Bitumen exhibits superior resistance to weathering, UV radiation, and thermal degradation. This property ensures long-term performance, reducing the need for frequent maintenance and replacement.

Enhanced Durability

The increased hardness and viscosity of Oxidized Bitumen contribute to its enhanced durability. It can withstand heavy traffic, temperature fluctuations, and other environmental factors, resulting in longer-lasting structures and surfaces.

Versatility in Application

Oxidized Bitumen can be used in a wide range of applications, including roofing, waterproofing, road construction, and joint filling. Its diverse uses make it a versatile material that can address various industry needs.

Cost-Effectiveness

By providing durable and long-lasting solutions, Oxidized Bitumen offers cost savings in the long run. Its resistance to aging and weathering reduces the need for frequent repairs and replacements, resulting in lower maintenance costs.

✅ Advantages of Oxidized Bitumen

• 🔥 Heat Resistance – Performs well in hot climates

• 🌊 Superior Waterproofing – Ideal for subgrade and moisture-prone areas

• 🧱 Durability – Long service life in roofing and sealing

• 🧪 Chemical Stability – Resistant to aging and oxidation

❓ Frequently Asked Questions (FAQ)– Oxidized Bitumen

1. ❔ What is the difference between oxidized bitumen and blown bitumen?

🧪 They are the same product—oxidized and blown refer to the air-blowing process used in manufacturing.

2. ❔ Can oxidized bitumen be used in hot mix asphalt?

🛣️ No, Blown asphalt not suitable for hot mix paving. It’s designed for roofing, sealing, and industrial use.

3. ❔ Is oxidized bitumen waterproof?

🌊 Yes, blown asphalt is highly waterproof and is commonly used in basement and foundation sealing.

4. ❔ What grade of oxidized bitumen is used in roofing?

🏠 Blown asphalt 115/15 and Oxidized asphalt 85/25 are commonly used due to their high softening points and flexibility.

5. ❔ Is oxidized bitumen environmentally safe?

♻️ It is chemically stable and non-volatile, but proper handling and storage are important.

🏁 Conclusion- Understanding Oxidized Bitumen

Oxidized Bitumen is a specially treated form of bitumen that undergoes an oxidation process to enhance its properties. Its increased hardness, viscosity, and temperature resistance make it suitable for roofing, waterproofing, road construction, and other applications. The benefits of Oxidized Bitumen, such as weather resistance, durability, versatility, and cost-effectiveness, make it a valuable material in various industries.

📣 Call to PARS Universal Bitumen

👉 Need high-quality Oxidized Bitumen for your industrial projects?

We in Pars Universal Bitumen, supply premium grades Oxidized Bitumen like 85/25, 90/40, and 115/15 for all your waterproofing, insulation, and roofing needs.

📞 Contact us now for bulk pricing, technical support, or a free consultation!

🛒 Visit Our Product Page → Pars Universal Bitumen: Oxidized bitumen

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📞 Phone: +971 4 878 2031

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