Description of Polymer Modified Bitumen (PMB 120)
Polymer Modified Bitumen 120 (PMB 120) is a highly engineered bituminous binder produced by blending premium-grade base bitumen with advanced polymers such as Styrene-Butadiene-Styrene (SBS). This modification significantly enhances the elasticity, cohesion, and temperature resistance of the binder, making it ideal for demanding road and infrastructure applications.
PMB 120 is designed to withstand extreme traffic loads and harsh climatic conditions. Its superior viscoelastic properties provide excellent rutting resistance at high temperatures and crack resistance at low temperatures, ensuring long-term pavement durability. The material also exhibits outstanding adhesion to aggregates and resistance to stripping, reducing maintenance costs over the pavement’s lifespan.
Key Properties:
- Penetration: Typically 100–140 dmm (depending on formulation)
- Softening Point: ≥ 65°C
- Elastic Recovery: > 75%
- High stability under heavy traffic conditions
- Excellent fatigue and aging resistance
- Improved bonding and waterproofing capabilities
Application of Polymer Modified Bitumen (PMB 120)
Polymer Modified Bitumen 120 (PMB 120) is specifically formulated for high-performance paving projects that require superior strength, elasticity, and resistance to deformation. Due to its exceptional thermal stability and flexibility, it is widely used in heavy-duty and high-temperature road applications.
Main Applications:
1-Highways and Expressways:
- Ideal for binder and wearing courses under intense traffic loads.
- Provides outstanding rutting resistance and fatigue life, ensuring longer pavement service.
2-Airport Runways and Taxiways:
- Suitable for areas subjected to high tire pressures and extreme temperature fluctuations.
- Reduces risks of surface deformation and cracking caused by aircraft movements.
3-Industrial Areas and Container Terminals:
- Perfect for pavements exposed to continuous heavy loading and static stress.
- Maintains structural integrity under constant strain and mechanical pressure.
4-Urban Roads and Bus Lanes:
- Performs well in stop-and-go traffic conditions and areas with frequent braking.
- Enhances resistance to shoving and bleeding in hot climates.
5-Bridge Decks and Flyovers:
- Offers superior flexibility and waterproofing, preventing cracks and moisture penetration.
- Withstands dynamic loads and temperature variations effectively.
6-Rural and Desert Roads:
- Provides reliable performance in high-temperature environments.
- Retains flexibility and adhesion even under prolonged heat exposure.
Packing of PMB 120
- New Steel Drums 180Kg
- Jumbo Bags of 1000 kg
Specifications of Polymer Modified Bitumen 120
| Property | Typical Value | Test Method | Specification / Limit | Result |
| Penetration @ 25°C (0.1 mm) | 120 | ASTM D5 | 115 – 125 | 121 |
| Softening Point (°C) | 50 | ASTM D36 | 48 – 52 | 50 |
| Elastic Recovery @ 25°C (%) | 60 | ASTM D6084 | ≥ 55 | 61 |
| Viscosity @ 135°C (Pa·s) | 2 | ASTM D4402 | 1.8 – 2.2 | 2 |
| Storage Stability Difference (°C) | 1.1 | ASTM D5892 | ≤ 2.0 | 1.1 |
| Ductility @ 25°C (cm) | 100 | ASTM D113 | ≥ 90 | 101 |
| Flash Point (°C) | 250 Min | ASTM D92 | ≥ 250 | 253 |
| Specific Gravity @ 25°C | 1.01 | ASTM D70 | 1.00 – 1.05 | 1.01 |
| Solubility in CS2 (%) | 99.0 Min | ASTM D4 | ≥ 99.0 | 99.5 |
