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.

There are many factors that affect the quality of asphalt use. In addition to the equipment that meets the conventional requirements of the asphalt mixing plant, the proportion of raw materials is also very important. my country's current industry regulations stipulate that the particle size of the asphalt mixture used in the upper layer of the highway cannot exceed half of the thick layer, the particle size of the mixture in the middle layer cannot exceed half of the thickness of the two-thirds layer, and the size of the structural layer cannot exceed the same thickness. one-third of the layer.
It can be seen from the above regulations that if it is an asphalt layer of a certain thickness, the particle size of the selected asphalt mixture is particularly large, which will also have a great impact on the construction of asphalt concrete pavement. At this time, the proportion of raw materials must be considered. We must investigate as many aggregated sources as possible if reasonable. In addition, the model of the asphalt mixing plant is also one of the factors that needs to be considered.
In order to ensure the quality of paving, workers must strictly screen and inspect raw materials. The selection and determination of raw materials need to be based on the requirements of the sidewalk structure and use quality, combined with the actual supply situation, to select appropriate materials so that the raw material indicators can meet the specified requirements.