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Application scope of asphalt spreader

Release time:

2023-05-31

The "prime layer", "lower seal layer", and "adhesive layer" of the newly constructed road surface. The "prime coat" is generally sprayed with emulsified asphalt or asphalt diluted with kerosene; The "sticky layer" is generally sprayed with emulsified asphalt; The "lower sealing layer" is generally sprayed with hot asphalt (heavy duty asphalt or modified asphalt).

The application of asphalt spreaders in the construction and maintenance of asphalt pavement has become increasingly important in recent years, not only because of the good quality and high efficiency of asphalt spreaders, which can improve construction quality and progress, but also because their application scope in the construction and maintenance of asphalt pavement is becoming wider and wider. Its main application content includes:
1. Surface treatment of crushed stone sealing layer. The surface treatment of crushed stone sealing layer is commonly used for preventive maintenance of asphalt pavement.
2. The "prime layer", "lower seal layer", and "adhesive layer" of the newly constructed road surface. The "prime coat" is generally sprayed with emulsified asphalt or asphalt diluted with kerosene; The "sticky layer" is generally sprayed with emulsified asphalt; The "lower sealing layer" is generally sprayed with hot asphalt (heavy duty asphalt or modified asphalt).
3. Rural road construction. Since the road load of rural roads is not large, the construction technology of asphalt mixers and asphalt paver can generally be avoided, and more economical "gravel seal surface treatment" can be used.
4. Stress absorbing layer (SAM) and stress absorbing intermediate layer (SAMI).
The stress absorption layer and stress absorption intermediate layer generally use the "crushed stone sealing layer" mode. To ensure the absorption effect of reflection cracks, the bonding material is generally modified asphalt or rubber asphalt, with a high softening point and a large spreading amount of about 1.8-2.5kg/m ²。 In the United States and South Africa, rubber asphalt stress absorbing layer is often used in the overlay of thin anti reflective pavement, and the effect is very ideal. Its anti reflective ability is equivalent to 5.2cm of asphalt concrete. The stress absorbing intermediate layer is generally used above and below the paving layer of asphalt pavement, which can effectively prevent surface cracks.

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