| abstract |
The present invention is applied to the repair and reinforcement target of the structure to form a primer layer, and a primer composition comprising acrylic resin, siloxane, amino compounds, phosphoric acid, nitrite; An underwater non-separated mortar composition, which is poured on the primer layer to form a cross-section repair layer, and includes cement, silica sand, calcium sulfoaluminate, silica fume, barium carbonate, and a thickener in water; A composition for repair and reinforcement of an underground infrastructure facility exposed to a corrosive environment, comprising; a surface protection composition that is poured into the single-sided repair layer to form a surface layer, and includes a polymer resin, silica, silane, photocatalyst, and a penetration hardener. It is about. |