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1. Asphalt pavement has low temperature crack resistance.
Low-temperature crack resistance refers to the ability of an asphalt pavement to resist shrinkage cracks at low temperatures. As the asphalt pavement decreases with temperature, the stiffness increases and the ability to expand becomes lower. Under external loads, part of the stress does not have time to relax, and the stress gradually builds up. When these accumulated stresses exceed the tensile strength of the material, cracking occurs, which can lead to the destruction of the road surface. Therefore, the asphalt pavement should have low stiffness at low temperatures. And greater resistance to deformation to meet the low temperature crack resistance.
2. Asphalt roads have water stability.
Water stability refers to the ability of asphalt pavements to withstand the erosion of water and gradually produce asphalt film peeling, grain breakage, looseness, and pit destruction. This is because the presence of moisture reduces the cohesion of the asphalt itself, and also destroys the cohesion between the asphalt and the minerals in the asphalt pavement, thereby accelerating spalling and causing road damage. Therefore, asphalt pavement must have water stability so as to ensure the durability of the road surface.
3. Asphalt pavement should have fatigue resistance.
Fatigue resistance refers to the ability of asphalt pavements to withstand damage under repeated loading. It is due to the repeated action of the wheel load during the use of the asphalt pavement, and it is in a state of stress and strain overlapping for a long time, resulting in a gradual decrease in the strength of the pavement structure. When the load is repeated for more than a certain number of times, the stress generated in the pavement under the load will exceed the structural resistance after the strength is reduced, causing cracks in the road surface, resulting in fatigue and fracture damage. Therefore, the asphalt pavement should have fatigue resistance.
4. Asphalt pavement has high temperature stability.
High temperature stability is the ability of the asphalt pavement to resist flow deformation. Since the strength and stiffness of asphalt pavements decrease significantly with increasing temperature, in order to better ensure that asphalt pavements do not cause problems such as waves, tumbling, rutting, crowding, etc. in the high temperature season, the asphalt pavement should have good High temperature stability.
Asphalt pavements are now commonly used in cities because asphalt pavements can provide vehicles with stable and durable services and are deeply loved by the general public. The following is a small series of road marking companies in Guangzhou to introduce you to the four properties of asphalt pavement.