Sand and gravel requirements for expressway

The requirements for sand and gravel of expressway mainly include the requirements for sand and gravel grain size, mud content, sand and gravel hardness, water content, etc. More and more machine-made sand is used for highway sand and gravel, mainly because of the following advantages of machine-made sand. Machine made sand can be produced locally following large projects, thus reducing project cost. The raw materials used in the production of machine-made sand are artificially selected, which can more effectively reduce its mud content and water content, thus saving a lot of fuel oil in asphalt concrete construction, reducing material costs and protecting the environment.

Because the crusher in the expressway sand and stone production is often engaged in impact grinding operation, so it is not easy to wear and break down. To solve this problem, the SMMVIK research and development team adopts a combined structure, which is very convenient for maintenance, making the maintenance of the expressway sand and stone crusher easier.