Recently, the invention patent applied by Guardex "a water-based permeable crystalline concrete surface repair enhancement material and its preparation method and application" was approved by the State Intellectual Property Office and authorized. Patent number: ZL 2020 1 0336291.7.

Compared with the concrete interior, the surface concrete is at a disadvantage during the preparation process and after forming.

In the dry environment and insufficient maintenance conditions, the surface water loss and insufficient cement hydration will lead to the compaction and strength of the concrete surface layer is lower than the internal concrete to varying degrees, and the durability of the concrete is affected.

After forming and in daily use, surface concrete is more vulnerable to various external damage factors (water, carbon dioxide, acid and alkali salt medium, etc.) erosion, resulting in concrete cracking, leakage, carbonization, corrosion and other problems.Therefore, the concrete surface is of great significance to reduce the internal defects of concrete and improve the concrete durability.

In view of the problems of surface concrete, the present invention provides a water-based permeable crystalline concrete surface repair reinforcement material, and the preparation method and application of the material.The material has the characteristics of fast strength improvement, obvious repair effect on concrete and mortar, and good durability, long life, simple preparation, convenient construction and efficient construction.The main components of this material chemically react with the calcium ions in the internal hole solution of the concrete to form calcium silicate crystals and fill the cracks and pores to achieve the effect of increasing compactness and enhanced repair.

When the reaction of crystals fill concrete internal cracks and pores, upper residual material after water evaporation, can generate a kind of insoluble dry film, so the material in strengthening repair concrete at the same time, also has certain water permeability and air moisture resistance, improve the treatment of the surface enhancement layer of carbonization, acid erosion resistance.

The silicone components contained in the material, has excellent waterproof effect and seepage prevention, moisture resistance, rust resistance, aging resistance, anti-pollution and other advantages, avoid moisture inhalation into the base, so as to reduce the peeling caused by freezing and thawing and weathering, increase the life of the base.

The ion in the material spreads rapidly, so it can penetrate to a deeper depth, promote the formation of crystals, and improve the hardening speed and strength of the surface concrete repair enhancement layer; the reaction delay agent can affect the reaction rate and penetration depth of the material to penetrate into the concrete interior and achieve good repair enhancement effect and water permeability resistance.

The preparation and use of such materials are very convenient and efficient, in line with the needs of technical innovation and market changes, can better solve the surface concrete defects, and the hardening time is short, repair effect and strength play quickly, so it has a wide range of application prospects and market.

Up to now, Guardex has applied for more than 80 + patents and 39 invention patents, of which 9 of them have been authorized and 42 utility model patents (37 have been authorized).

In the future, Guardex will pay more attention to scientific and technological innovation, so as to realize the transformation of more new technologies, new materials and new processes, and boost the development of the concrete industry to a new level.