| 摘要 |
PROBLEM TO BE SOLVED: To provide a spraying material in which adhesion properties when the spraying material is sprayed is enhanced, rebound is reduced, quick-setting spraying cement concrete satisfactory in short and long term strength development can be obtained, viscosity of the quick-setting spraying cement concrete is instantaneously increased by using both a water reducing agent and a thickner, the use amount of hardening accelerating agent slurry can be reduced and a rebound ratio and a dust amount can be remarkably reduced and to provide the spraying technique using the spraying material. SOLUTION: The spraying material containing cement concrete, aluminium sulfate slurry and the water reducing agent containing alkyl naphthalene sulfonic acid formalin condensates, the spraying material further containing the thickner, the spraying material further having the thickner contained in the cement concrete and the spraying material further containing fiber and/or inorganic powder are provided. The spraying technique for spraying the spraying material is also provided.
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