Addressing the issues of weak adhesion and poor protective durability of organic protective materials, as well as the damage to the inherent structure of concrete caused by traditional inorganic protective materials, the China Coal Research Institute has jointly developed a new type of concrete protective material with Hokkaido University in Japan. This protective material rapidly penetrates the concrete surface by combining with water vapor, reacts with CaO or Ca(OH)2 in the concrete, and forms an inorganic C-S-H gel that never dissolves in water. This gel blocks the internal pores of the concrete, enhances the compactness and strength of the concrete, and thereby achieves efficient waterproof performance on the concrete surface.