With the planning of the national expressway, the amount of stone used in the society has also increased step by step. The highway sand and gravel aggregate has its own characteristics, and the construction sand and gravel is different. It can be divided into the following points:

1. Sand making equipment: The sand used for expressways is generally machine-made sand, and the sand making machine equipment for producing the sand is also quite special. There are vertical shaft impact sand making machines, VSI new high-efficiency sand making machines, etc.

2. The crushing equipment used in expressways is widely applicable to medium crushing and fine crushing (sand making) of various hard and brittle materials such as rocks, abrasives, refractory materials, cement clinker, quartz stone, iron ore, concrete aggregate, etc. Crushing equipment is most suitable for construction sand and road construction sand.

3. Granularity: Asphalt pavement construction roads for expressways need to produce machine-made sand, which is to use machines to crush gravel to a certain size, because machine-made sand does not contain mud like natural sand, which can improve the quality of asphalt concrete pavement.