Some major maintenance processes and construction processes in the highway industry. Today, we will focus on the synchronous gravel sealing technology, which is mainly introduced as follows:

Process principle: synchronous macadam seal refers to the simultaneous spraying of asphalt binder and aggregate distribution, so that the asphalt binder and aggregate have the fullest surface contact and the best adhesion.

Process overview: since the synchronous gravel seal layer concentrates the two processes of binder spraying and gravel spreading on one vehicle at the same time, it can make the gravel particles immediately contact with the hot asphalt or emulsified asphalt with good fluidity of 120~140 ℃ just sprayed, and deeply bury them in the binder.

Therefore, synchronous gravel sealing technology has the following characteristics: good waterproof; Good adhesion and skid resistance; Good wear resistance and durability; Good economy (synchronous gravel seal can be used as the transitional pavement of low-grade highway to alleviate the temporary shortage of highway construction funds); The construction process of synchronous gravel seal is simple and the construction speed is fast. The traffic can be opened in time at a limited speed, and the traffic can be completely opened after one hour.

Supporting process and equipment: synchronous gravel seal truck, loader, tire roller, asphalt transport truck, sprinkler, road dust removal equipment, small milling machine, etc.

Construction raw materials: ordinary asphalt, aggregate (granite, basalt, limestone, etc.), etc. Generally, the surface cracks of the pavement can be repaired and maintained with adhesive tape and sealant.

Construction process: carry out a trial seal layer on a section of pavement, adjust the operation parameters according to its effect until the expected effect is achieved, and then carry out a long distance continuous construction.