In my country, most of the raw materials used in highway construction are asphalt, so Asphalt mixing plants have also developed rapidly. However, under the situation of rapid economic development in my country, the problems of asphalt pavement have gradually increased, so the market requirements for asphalt quality have become higher and higher.

There are many factors that affect the quality of asphalt. In addition to the need for asphalt mixing plant equipment to meet conventional requirements, the ratio of raw materials is also very important. At present, my country's existing industry specifications indicate that the maximum particle size of asphalt mixture used in the upper layer of the highway cannot exceed half of the thick layer, and the maximum particle size of the aggregate of the middle asphalt mixture cannot exceed two-thirds of the thickness of the layer, and the maximum size of the structural layer cannot exceed one-third of the same layer.
From the above regulations, it can be seen that if it is a certain thickness of asphalt layer, if the particle size of the selected asphalt mixture is particularly large, then the construction of asphalt concrete pavement will also be greatly affected. At this time, if you want to make a reasonable ratio of raw materials, you must try to examine the aggregate resources as much as possible. In addition, the model of asphalt mixing equipment is also one of the factors that need to be considered.
In order to ensure the quality of road paving, workers must strictly screen and inspect the raw materials. The selection and determination of raw materials must be based on the requirements of pavement structure and usage quality, and then combined with the actual supply situation to select the best materials so that all indicators of the raw materials can meet the specified requirements.