| abstract |
Provided are a quick setting agent, a quick setting agent slurry, and a spray material that generate a small amount of dust during spraying. A quick setting agent comprising calcium aluminate, gypsum, alkali metal aluminate, alkali metal carbonate, or further oxycarboxylic acid, comprising the quick setting agent and water. It is a quick setting slurry, is a spraying material containing cement concrete containing cement and the quick setting agent, a spraying material formed by mixing cement and the quick setting agent, A spraying method in which the rapid setting agent and cement concrete are mixed and sprayed, and the spraying material includes cement concrete containing cement and the quick setting agent slurry. A spraying method comprising cement concrete containing cement and the quick setting slurry. A spraying method characterized in that the quick setting agent slurry is continuously adjusted by adding water to the quick setting agent, and then mixed and mixed with cement concrete and sprayed. [Selection figure] None |