| abstract |
The present invention relates to a high toughness refractory mortar composition that can increase the durability and fire resistance of a concrete structure, and a fireproof coating repair method for an existing or newly constructed structure using the same. ,n n n A ground treatment step of removing the deterioration of the concrete structure and removing foreign substances with high pressure water; Silica sand: 20 to 40% by weight, cement: 20 to 30% by weight, fly ash: 5 to 15% by weight, silica fume: 0.1 to 1.0% by weight, calcium carbonate: 3 to 10% by weight, hollow portion Ceramic porous body: 0.1-5% by weight, CSA-based expansion material: 1-4% by weight, powder resin: 1-5% by weight, thickener: 0.01-0.08% by weight, shrinkage reducing material: 0.01-0.25% by weight, water reducing agent: 0.1- 0.5% by weight, air conditioner: 0.01 ~ 0.20% by weight, the remaining step of filling a high toughness refractory motor having a composition consisting of water; Plasma finishing step of applying and coating the film watertight agent before the high toughness fire-resistant curing. |