What is the Difference between Machine-made Sand and Washed Sand?

The difference between machine-made sand and washed sand.
  1. The formation process of machine-made sand is mainly sand processed by crushers, sand making machines and other ancillary equipment; water-washed sand is raw sand for foundry that is washed and graded by natural silica sand; therefore, machine-made sand and water-washed sand are different. And machine-made sand can be used in many construction fields instead of washed sand.
  2. The finished product of particle shape machine-made sand is more regular, such as river pebble, coal gangue, limestone, etc., can be processed into machine-made sand, which can be processed into sand of different rules and sizes according to different technological requirements, which can better meet daily needs; Mainly floodplain sedimentary sand, rock particles with a particle size of less than 5mm;
  3. The degree of cleanliness the machine-made sand is clean and free of mud and dirt, and the washed sand and natural sand have a certain amount of mud content, which is not clean enough. In contrast, the investment in machine-made sand is not very good. Although machine-made sand has a higher initial cost compared with natural sand, the post-processing is relatively low, with a short cycle, stable supply, quick return on costs, and many supporting policies have been introduced. This is why washing the battlefield makes huge profits.
  4. The persistence of supply is different. River sand is formed by natural stone through the action of nature for a long time, mainly by artificial mining, but the resources are limited after all, and after years of mining, the resources are getting less and less, and the later supply is not guaranteed; There are sufficient raw materials for machine-made sand, and local materials, such as urban construction waste, gravel tailings, leftovers, and stone chips and slag, can all be processed into sand.
  5. River sand with different specifications is generally formed by repeated collisions and frictions of water for a long time. The surface is relatively smooth and the particles are round; the machine-made sand is processed by a sand making machine and other ancillary equipment. The surface is rough and has sharp edges and corners. It can be processed into sand of different rules and sizes according to different technological requirements. When cement is used for bonding, it often has better adhesion, stronger compression resistance, and meets user needs in a wider range.
  6. Different costs. At present, natural river sand is generally faced with the difficulty of mining, the large investment in procurement costs, and the continuous reduction of resources, all of which have a negative impact on engineering construction; although the price of machine-made sand varies from place to place. Basically, it is cheaper than river sand. The machine-made sand produced by an efficient sand making machine is more affordable and reduces the cost of user input. With this advantage, it gradually occupies the market and become one of the better sources of construction materials.