Oxidized Bitumen 75/25 (Blown Asphalt 75/25) – Premium Flexible Grade for Specialized Construction Applications
Description:
Oxidized Bitumen 75/25 represents a unique balance of flexibility and durability, produced through precisely controlled air-blowing of vacuum-distilled bitumen. This specialty grade features a lower softening point combined with moderate penetration, making it ideal for applications requiring exceptional pliability without compromising structural integrity. Its distinctive rheological properties provide superior performance in temperature-sensitive environments.
Key Advantages:
- Excellent low-temperature flexibility (down to -25°C)
• Superior waterproofing capabilities
• Enhanced adhesion to multiple substrates
• Outstanding aging resistance
Uses:
Premium Waterproofing Systems:
- High-performance roofing membranes
- Underground structure waterproofing
- Tunnel lining systems
Infrastructure Applications:
- Bridge expansion joints
- Airport runway seals
- Marine structure protection
Industrial Solutions:
- Pipeline corrosion coatings
- Heavy-duty tank linings
- Industrial floor sealants
Specialty Products:
- Modified bitumen membranes
- Cold-applied mastics
- Sound-deadening compounds
Packing & Shipping:
Advanced Packaging Options:
- 25kg Triple-Layer Bags: Polyethylene-lined kraft paper with UV protection
- 200kg UN-Certified Drums: Galvanized steel with hermetic sealing
- 1000kg Thermal Palletized Blocks: Shrink-wrapped with desiccant
Bulk Handling:
- Heated tanker trucks (maintained at 160-180°C)
- ISO tank containers with temperature control
Global Logistics:
- Compliant with IMDG/IATA/ADR regulations
- Climate-controlled warehousing available
- Custom documentation including:
- Certificate of Analysis (CoA)
- Material Safety Data Sheet (MSDS)
- Origin certification
Product Specification (Oxidized Bitumen 75/25):
| Characteristic | Specification | Test Method | Premium Grade |
| Softening Point (°C) | 70-80 | ASTM D36/EN 1427 | 75±2 (Premium) |
| Penetration (25°C, 0.1mm) | 20-30 (100g, 5s) | ASTM D5/EN 1426 | 25±2 (Premium) |
| Ductility (25°C, cm) | ≥40 | ASTM D113 | ≥50 (Premium) |
| Elastic Recovery (%) | ≥60 | ASTM D6084 | ≥75 (Modified) |
| Flash Point (°C) | ≥230 | ASTM D92/EN ISO 2592 | ≥250 (Premium) |
| Loss on Heating (%) | ≤0.7 | ASTM D6/EN 13303 | ≤0.5 (Premium) |
| Solubility (%) | ≥99.5 | ASTM D4/EN 12592 | ≥99.9 (Premium) |
| Low-Temp Flexibility | Passes -25°C | EN 1109 | Passes -30°C |
Quality Assurance:
- Batch Testing: Every production lot undergoes 18-point quality control
- Certifications:
- ISO 9001:2015 Quality Management
- CE Marking for construction products
- EN 13304 Compliance
- Advanced Analytics:
- FTIR spectroscopy for consistency
- Rheological profile analysis
Special Formulations Available:
- Polymer-Modified: SBS or APP enhanced versions
- UV-Stabilized: For exterior applications
- Fast-Cure: Rapid setting formulations
- Cold-Applied: Ready-to-use variants
Technical Support:
- Application guidelines for various substrates
- Compatibility testing services
- On-site technical consultation available
