Compared with natural river sand, what are the characteristics of mechanical sand?

　　With the decrease of natural sand, the market of mechanical sand shows great potential and vitality. Especially in recent years, the great demand of the construction market has promoted the rapid development of the sand and stone market. So compared with natural sand such as river sand, sea sand and mountain sand, what are the advantages of mechanical sand? What are the characteristics?

　　1, appearance

　　Compared with natural river sand, machine-made sand is characterized by sharp and sharp edges and sharp angles, many needles and rough shape, which is obtained after grinding by professional sanding equipment such as impact crusher.

　　2. Durability and durability

　　Mechanical sand is slightly less strong than river sand, but it still reaches the standard of GB/T141684293. There is no problem in the use of ordinary concrete. But in the concrete member which often suffers the friction impact, in addition must use the admixture, also should control the concrete's ash sand ratio and the sand crushing index and the stone powder content.

　　3. Stone powder content

　　The powder content of mechanical sand is the ground rock powder less than 0.075mm. It cannot be hydrated with cement, but it can have a very good connection with cement crystallite, which has the filling effect of micro aggregate in the internal layout.

　　4. Adhesiveness and pressure resistance

　　The particle size of mechanical sand is irregular. When using cement and other structures to bond, there is often better adhesion, more compression resistance and longer service life.

　　As it turns out, mechanical sand is not only from a wide range of sources, stable material, easy to operate and control, good performance, able to meet the building demand, but also economically feasible, which is the development direction of the future construction market and also very beneficial to the protection of natural environment.

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