| abstract |
(57) [Abstract] [PROBLEMS] To provide a spraying material having a good initial strength and a long-term strength, an excellent long-term storage property, and a low rebound rate, and a spraying method. SOLUTION: This is a spraying material obtained by mixing cement mortar containing cement and gypsum as a main component and a quick-setting agent containing calcium aluminate as a main component, and the cement mortar is a general term for paste, mortar and concrete. An alkali aluminate or an alkali carbonate may be further added to the quick setting agent, and an admixture such as a high performance water reducing agent, a setting retarder, a setting accelerator, or an ultrafine powder is added to the spray material. Is also good. |