Wintality Petroleum is proud to offer high-quality bitumen products that meet the rigorous standards outlined in AS 2008: Residual Bitumen for Pavements, the Australian Standard that classifies and specifies the properties of conventional pavement-grade bitumens widely used in Australia. Our bitumen products are designed to enhance the durability and performance of road surfaces, ensuring longevity and safety in various climatic conditions.
Types of Bitumen for Roadmaking
In Australia, the most commonly used classes of bitumen for sprayed sealing works include:
- Class 170: This is the most widely used class for sprayed sealing applications, known for its balanced viscosity and performance.
- Class 240: A higher viscosity binder compared to Class 170, this grade is preferred by some road agencies in warmer climates due to its enhanced performance in high temperatures.
- Class 320: Although it offers even higher viscosity than Classes 170 and 240, Class 320 has largely been replaced by polymer-modified binders (PMBs) and multigrade bitumens in many applications.
In New Zealand, sealing grade bitumens are characterized by penetration grades, including:
- 180/200 Penetration: Typically used for sprayed seal work, this grade is approximately equivalent to Class 50 bitumen in Australia.
- 130/150 Penetration: A slightly harder grade that serves as an alternative to 180/200.
- 80/100 Penetration: Primarily used in hotter areas or for resealing applications.
Viscosity Grade Bitumen Specifications
Wintality Petroleum adheres to the latest specifications outlined in both AS2008-1997 and AS2008-2013, ensuring our products meet industry standards. Below are key specifications for viscosity grade bitumen:
AS2008-2013 Viscosity Grade Specifications
| Property | Units | Class 170 | Class 240 | Class 320 | Class 450 | Class 600 | Test Methods |
|---|---|---|---|---|---|---|---|
| Viscosity at 60°C | Pa.s | 140-200 | 190-280 | 260-380 | Report | 500-700 | AS/NZS 2341.2 |
| Viscosity at 135°C | Pa.s | 0.25-0.45 | 0.32-0.55 | 0.4-0.65 | Max:0.70 | 0.60-0.85 | AS/NZS 2341.3 |
| Penetration at 25°C | mm | Min:62 | Min:53 | Min:40 | Report | Min:20 | AS/NZS 2341.12 |
| Flash Point (Min) | °C | 250 | - | - | - | - | AS/NZS 2341.14 |
| Matter Insoluble in Toluene (Max) | %Wt | 1.0 | - | - | - | - | AS/NZS 2341.20 or AS/NZS 2341.8 |
| Density at 15°C | Kg/m³ | Report | - | - | - | - | AS/NZS 2341.7 |
Properties of Bitumen
The properties of our bitumen products are meticulously tested to ensure they meet stringent requirements:
- Viscosity: Measured at both high (135°C) and moderate (60°C) temperatures, our bitumen demonstrates excellent flow characteristics essential for effective application.
- Penetration: The penetration test at a standard temperature of 25°C provides insight into the hardness or softness of the bitumen, guiding its suitability for various climatic conditions.
- Flash Point: A minimum flash point of 250°C ensures safety during handling and application.
- Solubility: High solubility in trichloroethylene indicates purity and quality, with a minimum requirement of over 99%.
Applications of Bitumen
Wintality Petroleum's bitumen products are versatile and suitable for a wide range of applications:
- Road Construction: Our Class 170 and Class 240 bitumens are ideal for constructing durable roads that can withstand varying traffic loads and environmental conditions.
- Sprayed Sealing Works: The flexibility and performance characteristics of our products make them perfect for sprayed sealing applications, enhancing surface durability.
- Polymer Modified Bitumen (PMB): Our base grades can be modified with polymers to improve elasticity, ductility, and overall performance under extreme conditions.
Conclusion
At Wintality Petroleum, we prioritize quality and compliance with Australian standards to deliver superior bitumen products tailored to meet the diverse needs of road construction and maintenance projects. Our commitment to excellence ensures that our clients receive reliable materials that enhance the safety and longevity of their infrastructure. For more information about our bitumen products or to request a quote, please visit our Contact Us page. Wintality Petroleum is dedicated to supporting your construction needs with high-quality materials designed for optimal performance in any environment.