Construction method for asphalt road surface of road

Abstract

The invention relates to a construction method for an asphalt road surface of a road. The method is suitable for ensuring the quality and the longer service life of the road, and includes steps as follows: a pneumatic tyred roller is adopted for the initial rolling, namely, the pneumatic tyred roller follows a spreading machine closely to roll for 2-3 times, and during the rolling process, the temperature of the road surface is 120-150 degree C; and then a steel wheel roller is adopted for the final rolling after the first rolling. In order to prevent the asphalt from sticking onto the tyres, the temperature of the road surface is kept above 100 degree C during adopting pneumatic tyred roller to finish the initial rolling. As the temperature of the road surface during the initial rolling is higher, and the kneading amplitude of the tyres is larger, therefore, the weight of the adopted pneumatic tyred roller can be reduced appropriately, and the rolling time is only required for 2-3 times, in this way, the design requirement of the compactness of the road surface can be satisfied. The temperature determines the rolling quality of the road surface, and meanwhile, the asphalt in the material easily forms thicker sealing oil film layer, so that water, slurry and air can be prevent form entering, prevention of water damage to the road surface can be facilitated, and the durability of the road surface can be improved.

Description

technical field [0001] The invention relates to a construction method of highway asphalt pavement. Background technique [0002] Asphalt pavement is various types of pavement paved with asphalt materials mixed with mineral materials. Asphalt binder improves the ability of paving aggregates to resist road damage from driving and natural factors, making the road smooth, less dusty, impermeable and durable. Therefore, asphalt pavement is the most widely used high-grade pavement in road construction. [0003] Asphalt binder bonds the mineral aggregates into a whole, increases the strength and enhances the ability of the pavement to resist driving damage, and makes the pavement water-resistant. The asphalt materials suitable for road construction are mainly petroleum asphalt and coal asphalt. [0004] The asphalt mixture is paved on the road surface by a paver, and then the road surface is compacted by a road roller; the road surface compaction is divided into three stages: in...

AI Technical Summary

Problems solved by technology

[0009] 1. Steel wheels are used for the initial pressure to compact the road surface, and a large amount of water is sprinkled at the same time, resulting in temperature loss;

[0010] 2. When tires are used for repressing, the temperature of the asphalt mixture is low, which can easily cause the asphalt mixture to stick to the tire tread; it is necessary to use diesel to clean the tires, which takes time and effort and wastes diesel;

[0011] 3. The steel wheel will cause the asphalt mixture to move during the initial pressure, and horizontal ridges are easy to form at the turning back, resulting in insufficient road surface smoothness;

[0012] 4. There is vibration when the steel wheel rolls the road surface, which leads to the basic formation of the road surface. When repressing, the rubbing effect brought by the tire is small, and the rubbing effect of the tire cannot be exerted, resulting in the compactness of the road surface not meeting the design requirements;

[0013] 5. The temperature of the asphalt mixture is low during repressing, and tire marks are not easy to eliminate;

[0014] 6. The temperature of the asphalt mixture is low during repressing, and it is not easy to form a sealing oil film on the road surface

[0015] The deficiencies of the prior art lead to the unsatisfactory quality of the existing highway asphalt pavement, and the service life of the highway is relatively short