Micro silica powder, also known as silica powder or condensed silica powder, is formed by the rapid oxidation, condensation and precipitation of a large number of highly volatile SiO2 and Si gases produced in the submerged arc furnace when ferroalloy smelting ferrosilicon and industrial silicon (metal silicon). It is a by-product of large-scale industrial smelting. The whole process needs to be recovered with dust removal and environmental protection equipment. Because the density is small, it also needs to be encrypted with encryption equipment.

Silica powder plays a great role in concrete and can play a good role in its hardening function. It is mainly attributed to the improvement of interface layout and composition, the improvement of bond strength between net slurry and aggregate, and then the problem of "weak connection" of different composite components in concrete is eliminated. Adding micro silica powder in concrete can improve the anti penetration function of concrete, Useful advances in chemical resistance.

Silica powder concrete used in water conservancy and hydropower projects can improve the abrasion resistance of the project. Using micro silica powder concrete, the impact and abrasion resistance can be doubled, and the abrasion resistance of 48m / s flow rate can be increased by more than 3 times.

Silica powder concrete used in hydraulic engineering can improve the anti crack function of hydraulic concrete. Micro silica powder concrete can improve the anti penetration function and anti salt corrosion function, and maintain the reinforcement. Micro silica powder concrete is used in the emergency repair of traffic and highway pavement, and has strong wear-resistant characteristics.