Fog sealing is a road maintenance method with a wide range of applications. Mainly used on roads with light to moderate fines loss or loose material. For example, when the asphalt pavement is loose, the fog seal layer can solve the problem; such as the surface of dense-graded asphalt mixture on aging pockmarked surface, the surface of gravel seal layer, the surface of open-graded asphalt mixture, etc. It mainly refers to the fact that the road surface has begun to show slight fatigue cracks and fine aggregate loss, and its water permeability has increased. Pavement water will enter the asphalt mixture through cracks or fine aggregate damage, causing cracks, cracks, and Potholes and other pavement conditions where the pavement structure performs well.

The technical feature of the simultaneous gravel sealing technology is that one equipment can spread the bonding material and stone at the same time. The asphalt and stone must be combined within one second. The temperature of the hot asphalt is 140°C when the bonding material is sprayed, and the temperature can be guaranteed to be above 120°C during bonding. The asphalt temperature drops very little. At this time, the fluidity of the asphalt binder is still very good, and the bonding area with the stone is large, which enhances the bonding with the stone. The strength of the stone bond. The traditional surface sealing technology generally uses two different equipments and two processes for spreading construction. Such a long construction time interval will cause the temperature of the asphalt to drop by about 70°C, and the bonding effect between the stone and the asphalt will be poor, resulting in a large loss of stone and affecting the performance of the sealing layer.

The type of mixture used for slurry seal construction is selected based on factors such as usage requirements, original road conditions, traffic volume, climate conditions, etc., and the mix ratio design, road performance test and design parameter test of the mixture are carried out, and the mix is ??determined based on the test results. Material mix ratio. This process is recommended to be equipped with a mineral screening machine to screen stones.
Specific precautions are as follows:

Emulsion bitumen for micro surfacing is the binding material for micro surfacing construction. Its characteristic is that it needs to meet the mixing time with the stone and the opening time for traffic after the paving is completed. To put it simply, it meets two time issues. The mixing time must be sufficient, and the opening of traffic must be fast, that's all.

With the development of society and the rapid growth of our country's economy, domestic infrastructure is developing faster and faster. Needless to say, the market applications of our asphalt mixing plants are also gradually increasing. Many users and manufacturers see market potential in this industry. Already invested. Therefore, in this process, the choice of construction location is very critical. The location of the asphalt mixing plant is directly related to its long-term operation.

In our country, most of the raw materials used in highway construction are asphalt, so asphalt mixing plants are also developing rapidly. However, with the rapid development of my country's economy, problems with asphalt pavement are gradually increasing, so the market's requirements for asphalt quality are getting higher and higher.