Compared with the ordinary asphalt pavement, the maintenance of the highway has its own characteristics. Preventive. Preventive maintenance can delay the deterioration of pavement performance caused by traffic and environmental loads and prolong the service life of the pavement. Resilience. Rehabilitation is the maintenance of the road after repair should be completely restored to the original performance of the road, that is, its flatness, friction performance, load capacity, noise and other performance should meet the highway fast, safe and comfortable basic requirements, and Can not be due to maintenance and maintenance work has declined. Reinforcement. Maintenance of the highway maintenance operations are often with the original road to make up for the lack of strength requirements, which is the so-called reinforcement role. Reinforcement is not only to enhance the weak links of the original road, but also often in the extension of the road life and to meet the growing traffic flow considerations. The design of the original road traffic flow due to the rapid growth of the national economy and was quickly broken, this situation is common, sometimes in the design of the road in order to reduce the initial investment and consciously weaken the strength of the road, this is because the highway The initial traffic volume used to build the general will not be too much, but will increase over time, traffic increased to a certain extent, and then in the original road over the second floor cover. sealants and encapsulants adaptability price of asphalt driveways per ton rock breaker highway building asphalt pothole repairing machine