American Standard (AC Grades)
Viscosity-grade bitumen, specifically classified under the American Standard, is a premium choice for diverse road construction and industrial applications. This page offers a comprehensive guide to the AC-grade viscosity bitumen, including grades such as AC 2.5, AC 5, AC 10, AC 20, AC 30, and AC 40. We also explore its packing methods, quality standards, applications, and provide an option to request a custom quote for your specific project needs.
American Standard viscosity grades are defined based on their flow properties, measured in centipoise (cP) or stokes. The AC grades, ranging from AC 2.5 to AC 40, cater to different climatic conditions and project requirements. Each grade is tailored for specific applications, ensuring optimal performance, longevity, and resistance to wear and tear.
Grades of Viscosity Bitumen (American Standard)
| Grade | Absolute Viscosity @ 60°C (Poise) | Kinematic Viscosity @ 135°C (cSt) | Applications |
|---|---|---|---|
| AC 2.5 | 250 | 80+ | Cold climates, light traffic roads. |
| AC 5 | 500 | 120+ | Moderate climates, secondary roads. |
| AC 10 | 1000 | 160+ | Highways, urban roads. |
| AC 20 | 2000 | 240+ | Heavy-duty highways and industrial areas. |
| AC 30 | 3000 | 320+ | High-load pavements in hot climates. |
| AC 40 | 4000 | 400+ | Extreme climates and industrial pavements. |
Applications of AC Viscosity-Grade Bitumen
Road Construction:
- AC 10 and AC 20 grades are widely used for highways and urban streets.
- AC 2.5 and AC 5 grades are suitable for regions with colder temperatures.
- AC 30 and AC 40 are ideal for industrial zones and areas requiring high-load capacity.
- AC 20 and AC 30 provide excellent durability for runways.
- AC 2.5 is often used for light-duty applications like sealing layers.
Bitumen Packing Methods
To cater to the varying needs of clients, viscosity-grade bitumen under American Standard is available in the following packing methods:
Steel Drums
- Capacity: 150 kg ,180 kg & 200kg
- Advantages: Easy to transport and store.
Bulk Tankers
- Description: Delivered in heated tankers for large-scale projects.
- Advantages: Cost-effective for high-volume requirements.
Polyethylene Bags:
- Description: Compact, lightweight, and eco-friendly.
- Advantages: Prevents leakage and simplifies handling
Jumbo Bags
- Capacity: 40 Kg ,300 Kg &1 ton.
- Advantages: Ideal for bulk purchases and efficient storage.
Quality Standards of AC
Viscosity-Grade Bitumen
- Performance: Optimized for diverse climatic and load conditions.
- Durability: Resists cracking, rutting, and aging.
- Eco-Friendliness: Manufactured under environmentally sustainable processes.
- Consistency: Strict adherence to viscosity metrics ensures predictable results.
Specification Sheet of Viscosity-Grade Bitumen (American Standard)
| Properties | AC 2.5 | AC 5 | AC 10 | AC 20 | AC 30 | AC 40 |
|---|---|---|---|---|---|---|
| Viscosity @ 60°C (Poise) | 250 | 500 | 1000 | 2000 | 3000 | 4000 |
| Viscosity @ 135°C (cSt) | 80+ | 120+ | 160+ | 240+ | 320+ | 400+ |
| Flash Point (°C) | ≥ 220 | ≥ 220 | ≥ 230 | ≥ 230 | ≥ 240 | ≥ 240 |
| Softening Point (°C) | 40-50 | 45-55 | 50-60 | 55-65 | 60-70 | 65-75 |
Benefits of Choosing AC Viscosity-Grade Bitumen
Reliable Performance
- Ensures long-lasting road infrastructure.
Cost-Effective
- Reduces maintenance costs by preventing early wear and tear.
Versatile Applications
- Suitable for a variety of construction needs.
Environmentally Responsible
- Complies with international sustainability standards.
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Frequently Asked Questions (FAQs)
VG30 is the most widely used viscosity grade bitumen for road construction because it offers an excellent balance of strength, flexibility, and durability. It performs well under heavy traffic loads, resists rutting and cracking, and provides reliable pavement performance in a wide range of climatic conditions. VG30 is commonly used for highways, expressways, city roads, and airport pavements.
The main difference lies in their viscosity and intended application.
- VG30 has moderate viscosity, making it suitable for most highways, urban roads, and standard asphalt pavements.
- VG40 is a harder, more viscous grade designed for heavy-duty roads, industrial areas, intersections, and regions with high temperatures or heavy axle loads.