| 摘要 |
PROBLEM TO BE SOLVED: To provide a spraying material for a sprayed structure which has excellent durability and prolonged strength, and generates less particles because of use of quick setting agent slurry. SOLUTION: The spraying material comprise a cement concrete which contains a hydraulic material of 100 pts.wt., an aggregate of 150-300 pts.wt., a polymeric emulsion and water, and a quick setting slurry which contains water and a powdery quick setting agent. A fiber a viscosity modifier and a fine powder are available as the spraying material. Calcium aluminate is favorable for the powdery quick setting agent in which a gypsum, an accelerating admixture and a retarding admixture may be contained therein. |
