| 摘要 |
PROBLEM TO BE SOLVED: To provide a quick setting agent which can reduce the amount of dust to be produced, can achieve high strength at the initial stage of spraying, and therefore has improved stability, and is sprayed, e.g. on the exposed surface of the ground in the tunnels, slope faces or the like of roads, railroads, aqueduct channels or the like, and to provide a quick setting agent slurry, to provide a spraying material, and to provide a spraying method using the same. SOLUTION: The quick setting agent contains calcium aluminates, slaked lime and oxycarboxylic acids. The quick setting agent slurry contains the quick setting agent and water. The spraying material contains cement concrete and the quick setting agent slurry. In the spraying method, water is added to the quick setting agent to continuously prepare the quick setting agent slurry, and the slurry is flowingly mixed with cement concrete, and this mixture is sprayed. |
