PG 70/10
What Is PG 70-10 Bitumen?
PG 70-10 is a high-performance asphalt binder designed under the Superpave Performance Grade (PG) system. The grade indicates the binder’s ability to perform in extreme temperatures:
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“70” refers to the maximum pavement temperature the bitumen can endure without losing its stiffness or deforming (rutting).
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“-10” refers to the minimum pavement temperature at which the binder remains flexible and resists thermal cracking.
This makes PG 70-10 suitable for very hot climates with mild winters, and it is often used in high-stress applications where performance and durability are critical.
Where Is PG 70-10 Used?
This grade is ideal for:
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Tropical and desert regions with extremely high pavement surface temperatures
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Heavy-load highways and expressways
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Urban intersections and industrial roads
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Airport runways and cargo terminals
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Projects requiring premium performance and long lifespan
Performance Highlights
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🔸 Superior Rutting Resistance: Maintains form under heavy, slow, or standing traffic in high heat.
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🔸 Fatigue Resistance: Withstands frequent load cycles without cracking or degradation.
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🔸 Aging Durability: Engineered to perform over long periods with minimal oxidation.
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🔸 Smooth Workability: Despite its stiffness at high temperatures, it remains manageable during mixing and application.
Technical Specifications (Typical Values)
| Property | Value |
|---|---|
| Performance Grade (PG) | 70-10 |
| Flash Point | > 240°C |
| Rotational Viscosity @ 135°C | < 3000 cP |
| Dynamic Shear @ 70°C | ≥ 1.00 kPa (unaged) |
| Bending Beam Rheometer @ -6°C | ≤ 300 MPa (stiffness) |
| Softening Point (Ring & Ball) | ~60–65°C |
Actual values may differ slightly based on the refining process or additives used.
Benefits of PG 70-10 Bitumen
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✅ Designed for Harsh, High-Temperature Environments
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✅ Exceptional Durability in Heavy-Traffic Areas
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✅ Improved Resistance to Rutting and Aging
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✅ Ideal for High-Performance Pavement Designs
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✅ Compatible with Polymer Modification for Even Higher Resilience
Conclusion
PG 70-10 bitumen is a premium asphalt binder formulated to meet the needs of extreme climate zones and high-load applications. Its exceptional high-temperature performance, resistance to fatigue, and durability make it a preferred choice for engineers seeking long-term pavement stability and reduced maintenance costs.
