Asphalt concrete mixing plant is an important equipment for the production of asphalt concrete. It has many models. There are seven or eight types of asphalt concrete mixing plant. The main step of pavement engineering construction is the production and paving of asphalt concrete. Improper selection of mixing equipment may make it difficult to control the construction period target, cost target and quality target of the whole project. The type selection of mixing plant equipment shall be carefully considered by many parties. Whether the type selection and configuration is reasonable directly affects whether the project can be completed according to quality and quantity.
1. Delay of construction period. The asphalt mixing equipment is not determined according to the relationship between quantities and construction period, resulting in the low selection of asphalt mixing equipment model, unable to complete the project quantities within the specified time, resulting in the delay of construction period.

2. Increased costs. Whether the model of asphalt concrete mixing equipment is low or high, it will lead to the waste of other corresponding resources and increase the cost.
3. The mixture is unqualified.Selecting the appropriate model is the basis of pavement construction quality.The performance of asphalt mixture is controlled by aggregate ratio, asphalt aggregate ratio, temperature and other parameters. Only when the relevant parameters of asphalt mixture are qualified, can the pavement meet the design standard after forming.
4. The comprehensive quality of pavement is not up to standard. Due to improper selection of asphalt mixture mixing equipment, the quality of asphalt mixture will be unstable and discontinuous, which will affect the asphalt paving construction process, cause unqualified compactness, flatness and structural depth of asphalt pavement, and directly affect the road performance of pavement.