Asphalt mixture is the general name of mixture composed of mineral aggregate and asphalt binder. According to the material composition and structure, it can be divided into continuous graded mixture and discontinuous graded mixture.

According to the gradation composition and porosity of mineral aggregate, it can be divided into dense gradation, semi-open gradation and open gradation mixture. According to the size of the nominal maximum particle size, it can be divided into extra-coarse type (the nominal maximum particle size is greater than 37.5mm), coarse type (the nominal maximum particle size is 26.5mm or 31.5mm), medium type (the nominal maximum particle size is16mm or19mm) and fine type (the nominal maximum particle size is 9.5mm or.

According to the manufacturing process, it is divided into hot mix asphalt mixture, cold mix asphalt mixture and recycled asphalt mixture.

Asphalt pavement refers to various types of pavements paved with asphalt materials mixed with mineral materials. Asphalt binder improves the ability of paving particles to resist the damage of traffic and natural factors to the pavement, making the pavement smooth, less dust, impermeable and durable. Therefore, asphalt pavement is one of the most widely used advanced pavements in road construction.

The asphalt structure layer of asphalt pavement itself belongs to the category of flexible pavement, but its base can also use rigid cement concrete or semi-rigid hydraulic materials besides flexible materials.