Oxidized Bitumen 90/40 – Superior Thermal Stability & Waterproofing Performance

PARS BITUMEN Blown asphalt 90/40 (Oxidized Bitumen 90/40, blown bitumen 90/40) is a Semi Solid grade of pure petroleum bitumen which is manufactured by blow of hot air through bitumen flux. Blown asphalt 90/40 is based on petroleum bitumen made by blowing of  very hot air to bitumen 60/70. The softening point value is the degrees Centigrade measured by the Ring and Ball method as determined by ASTM D36 regulations and standards. The penetration value is in 1/10 mm as determined by IP49 or ASTM D5 Standards.

Oxidized Bitumen / Asphalt is a solid or semi-black solid material and gradually liquid when heated, oxidized asphalt is predominant content bitumen, asphalt, molten (oils) and aromatic resins. The oxidized asphalt or blown asphalt is manufactured in various softening point and penetration grades.

PARS BITUMEN company guaranties the quality of PARS BITUMEN blown asphalt90/40 and is ready to prove this quality assurance by inspection of international inspectors to check quality and quantity of the blown asphalt 90/40 to be in conformity with ASTM regulations and standards before loading and also during production.

Oxidized Bitumen 90/40 (also known as Blown Bitumen 90/40) is produced by controlled air-blowing of penetration-grade bitumen to enhance its elasticity, hardness, and resistance to high temperatures. With a softening point of 90°C and penetration value of 40 dmm, this grade provides an ideal balance between flexibility and mechanical strength.

Pars Bitumen manufactures Oxidized Bitumen 90/40 under strict international quality control systems to ensure the best performance across industrial and construction environments.

 

 

✅ Specific Features & Material Benefits

Excellent thermal resistance — suitable for hot climate areas

Strong adhesion to concrete, metal, wood & insulation boards

Superior waterproofing capabilities

High resistance to aging & oxidation

Non-cracking under structural vibration and load changes

Long-term stability in outdoor exposure

Good resistance to chemicals, moisture & corrosion

 

 

🏗 Applications of Oxidized Bitumen 90/40

This grade is designed for:

Construction & Waterproofing

Roofing membranes & shingles

Foundation, basement & floor damp-proofing

Expansion joint filler in bridges & roads

Bituminous coatings for concrete durability

 

Industrial Manufacturing

Adhesives, mastics & sealing compounds

Insulation materials & protection sheets

Anti-corrosion coatings on pipes & steel structures

 

Electrical Industry

Cable and electronic insulation products

 

 

🔧 How to Apply Oxidized Bitumen 90/40

Correct application ensures full performance:

1️⃣ Surface Preparation

Clean and dry the surface — remove dust, oil, and loose materials.

Primer may be applied for better adhesion.

2️⃣ Heating / Melting

Heat the oxidized bitumen in a suitable melting kettle

⚠ Keep below the recommended maximum heating temperature (avoid overheating).

3️⃣ Application Method

Apply using:

Trowel

Brush

Pouring and leveling

Mastic spreading (depending on use)

 

4️⃣ Curing / Bonding

Allow bitumen to cool naturally

Ensure full adhesion before adding load or protective layers.

📌 Safety Note: Protective gear must be used during heating and installation.

 

Storage Conditions of blown asphalt 90/40

PARS BITUMEN guarantees its Blown asphalt 90/40 for the period of 10 years in the condition of  multi-time heating and cooling situation, please refer to MSDS standards for further information.

 

✅ Why Choose Pars Bitumen?

✔ High-purity raw materials & consistent production

✔ Fast worldwide delivery (bulk export support)

✔ Competitive prices & flexible packaging

✔ Technical documentation and after-sales support

✔ SGS inspection & private branding available

Pars Bitumen is trusted by infrastructure developers and industrial manufacturers globally.

 

 

📦 Packaging Options of Oxidized Bitumen 

Available in export-ready formats:

20–25 kg meltable PE bags

Kraft paper bags

Carton boxes

Steel drums

Shrink-wrapped pallets (optional)

 

Customized branding available upon request ✅

 

 

✅ Conclusion

Oxidized Bitumen 90/40 from Pars Bitumen offers long-lasting waterproofing, thermal endurance, flexibility, and mechanical strength, making it a dependable solution for modern industrial and construction projects. Its stable performance and manufacturing reliability ensure maximum value for customers around the world.

 

Contact Pars Bitumen:

🌐 Website: www.parsbitumen.com
📧 Email: sales@parsbitumen.com
📞 WhatsApp: +98 912 387 9127

 

 

PARS BITUMEN Specification of blown asphalt 90/40

Analysis asphalt 90/40

Bitumen 90/40	Test method	Unit	Specification
Specific gravity @25/25 C	ASTM D70	(Kg/m3)	1.05 approx.
Penetration @ 25°c	ASTM  D5	mm/10	35/45
Softening point °c	ASTM  D36	°C	85/95
Ductility @25 °c	ASTM  D113	Cm	5.5min
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

 

Written and Gathered by Pars Bitumen Company