Of all these

Crushed stone, gravel and sand is a three of the most popular natural materials in construction. Of all these materials, only crushed stone undergoes hard processing in crushers, although all three materials should undergo different types of cleaning and sorting. Cleansing from different impurities improve the quality of materials, and the quality of concrete in which they are used depends on this. Although for the formation of landscape designs, small amounts of sand or clay impurities in gravel are not so important, but the fractions of materials still matter.