| 摘要 |
PROBLEM TO BE SOLVED: To provide a cement-concrete spraying material which prevents fresh concrete from dropping and slipping off from slopes immediately after spraying, secures enough time for finishing with trowels, which forms the fine surfaces of the slopes, and is sprayed specially to easily sliding slopes, for example, to lattice frame structures placed on the slopes, and provide a method for spraying the above spraying material on the slopes. SOLUTION: This spraying material comprises a polyalkylene oxide, a bisphenol-based condensate having an average molecular weight of 5,000-30,000, aluminum sulfate and optionally cement. The cement-concrete containing the cement and the polyalkylene oxide is mixed with the bisphenol-based condensate and aluminum sulfate just before spraying, and then the mixture thus obtained is sprayed. The frame structures are formed by placing the reinforcing steel on the slopes, to which the above spraying material is sprayed. |
