Description of Bitumen AH70
AH-70 is a type of bitumen commonly used in road construction and maintenance. It is a hot mix asphalt binder with specific properties that make it suitable for high-temperature applications. AH-70 bitumen is known for its durability, flexibility, and resistance to wear and tear. It is commonly used in the construction of highways, roads, and other heavy-traffic areas.
SPECIFICATION OF BITUMEN AH70
| Test | Metholodogy | 70# | 90# | 110# |
|---|---|---|---|---|
| softening point℃ | GB/T 4507 | 46-56 | 45-55 | 42-55 |
| penetration rate at 25℃ | GB/7 4509 | 60-80 | 80-100 | 80-100 |
| ductility（15℃）cm≥ | GB/T 4508 | 100 | 100 | 100 |
| kinematical viscosity 60℃（pa.s） | T. 0620 | 180 | 180 | 180 |
| flash point℃≥ | GB/T 267 | 260 | 230 | 230 |
| wax content（distillation）% | GB/T 0425 | 2.2 | 2.2 | 3 |
| solubility trichloroethylene %≥ | GB/T 11148 | 99.5 | 99 | 99 |
| density25℃kg/m | GB/T 8928 | actual measurement | actual measurement | actual measurement |
| thin-film over test 163℃5h，penetration rate at 25℃ | GB/T 4508 | 61 | 55 | 55 |
| thin-film over test 163℃5h，change in quality %≤ | GB/T 5304 | ±0.8 | 1 | 110# |
| thin-film over test 163℃5h，ductility（15℃）cm≥ | GB/T 4508 | 15 | 40 | 40 |
Usage of Bitumen AH70
Bitumen AH-70 is commonly used in road construction and maintenance for various applications. Some common uses of bitumen AH-70 include:
- Asphalt concrete mixtures: Bitumen AH-70 is used as a binder in hot mix asphalt concrete mixtures to provide durability, flexibility, and resistance to wear and tear. It helps in bonding the aggregate particles together and provides a smooth and durable road surface.
- Road surfacing: Bitumen AH-70 is used for surfacing roads, highways, and other heavy traffic areas to provide a smooth and skid-resistant surface that can withstand heavy loads and traffic volumes.
- Pavement preservation: Bitumen AH-70 is used in pavement preservation treatments such as chip seals, slurry seals, and micro surfacing to extend the life of existing pavements and prevent deterioration.
- Patching and repairs: Bitumen AH-70 is used for patching potholes, cracks, and other pavement defects to restore the structural integrity of the road and prevent further damage.
- Seal coats: Bitumen AH-70 is used in seal coat applications to protect the underlying pavement from water infiltration, oxidation, and other environmental factors.
Overall, bitumen AH-70 is a versatile material that plays a crucial role in the construction and maintenance of roads and highways, providing long-lasting and high-performance road surfaces.
Packing of Bitumen AH70
Bitumen AH-70 is typically packed and supplied in drums or bulk containers for transportation and storage. The most common packaging options for bitumen AH-70 include:
- Drums: Bitumen AH70 is often packed in steel drums with a capacity of 150 kg or 180 kg. The drums are sealed to prevent leakage and contamination during transportation.
- Bulk containers: Bitumen AH70 can also be supplied in bulk containers such as tankers or flexi tanks for large-scale projects or industrial applications. These containers are designed to transport and store a significant quantity of bitumen efficiently.
When packing bitumen AH-70, it is essential to follow proper handling and safety procedures to ensure the quality and integrity of the material. It is crucial to store bitumen AH-70 in a cool, dry place away from direct sunlight and heat sources to prevent degradation and maintain its properties.
Before using bitumen AH-70, it is recommended to check the packaging for any signs of damage or leakage and ensure that the material is within the specified temperature range for optimal performance. Proper handling and storage of bitumen AH-70 are essential to ensure its effectiveness in road construction and maintenance applications.
Bitumen AH-70 is a commonly used paving grade bitumen that is widely used in road construction and maintenance projects. Here are some key things you should know about bitumen AH-70:
1. Grade and Properties: Bitumen AH-70 is classified as a paving grade bitumen with specific properties suitable for asphalt mixtures used in road construction. It has a penetration value of 70-100 dmm and a softening point of 46-52 degrees Celsius.
2. Application: Bitumen AH-70 is typically used as a binder in hot mix asphalt (HMA) to provide durability, flexibility, and water resistance to the pavement. It is suitable for various types of road surfaces, including highways, urban roads, airport runways, and parking lots.
3. Mixing and Handling: Bitumen AH-70 should be heated to the recommended temperature range (usually between 150-180 degrees Celsius) before mixing with aggregates to achieve proper workability and coating. It is essential to follow proper handling procedures to ensure the quality and performance of the asphalt mixture.
4. Storage and Transportation: Bitumen AH70 should be stored in a cool, dry place away from direct sunlight and heat sources to prevent degradation and maintain its properties. During transportation, it should be protected from moisture and contamination to preserve its quality.
5. Safety Precautions: When handling bitumen AH70, it is essential to use appropriate personal protective equipment (PPE) such as gloves, goggles, and protective clothing to prevent skin contact and inhalation of fumes. Adequate ventilation should be provided in storage and mixing areas to minimize exposure to vapors.
6. Quality Control: Regular testing and quality control measures should be implemented to ensure that bitumen AH-70 meets the specified requirements for viscosity, penetration, softening point, and other key properties. Testing methods such as viscosity, penetration, and ductility tests can be performed to assess the quality of the material.
By understanding these key aspects of bitumen AH-70, you can effectively use this paving grade bitumen in road construction projects while ensuring safety, performance, and durability of the asphalt pavement.
