| 摘要 |
PROBLEM TO BE SOLVED: To provide a set accelerating agent, a slurry set accelerating agent and a spraying material, wherein the amount of dust generated during spraying is small. SOLUTION: The set accelerating agent comprises calcium aluminates, a plaster, an alkaline metal aluminate, an alkaline metal carbonate or further oxycarboxylic acids. The slurry set accelerating agent contains the above set accelerating agent and water. The spraying material comprises a cement concrete containing a cement and the above set accelerating agent. The method of spraying comprises steps of mixing the above set accelerating agent and the cement concrete by flowing together and spraying. The spraying material also comprises a cement concrete containing a cement and the above slurry set accelerating agent. The method of spraying comprises spraying the material containing the cement concrete containing the cement and the above slurry of the set accelerating agent. The spraying method is characterized by steps of: preparing continuously the slurry set accelerating agent by adding water to the agent, flowing the slurry together with a cement concrete and then spraying. COPYRIGHT: (C)2007,JPO&INPIT
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