| abstract |
(57) [SUMMARY] [PROBLEMS] To reduce the amount of dust generated, reduce rebound, reduce construction costs, and have a quick setting spray cement with excellent durability in environments susceptible to groundwater To provide a spraying material that exhibits effects such as obtaining concrete and a spraying method using the same. SOLUTION Cement and fly ash, especially cement concrete obtained by blending 10 to 100 parts of fly ash with respect to 100 parts of cement, aluminum element, sulfur element, fluorine element, and alkanolamine, as required A spray material comprising a liquid accelerator containing a group 4A element, a spraying method in which the cement concrete and the liquid accelerator are individually pumped, mixed and sprayed, and The spraying method using the spraying material is configured. |