| 摘要 |
PROBLEM TO BE SOLVED: To provide an accelerator of hardening, a quick-hardening cement concrete and a spraying method using the same which is capable of sagging prevention, the prevention of dropping from a slant, trowel flattening and over- spraying just after the spraying, brings about a normal surface spraying material which is satisfactory in the trowel flattening of the surface and is excellent in the appearance of surface to be sprayed, is improved in strength revealing ability and forcibly-feeding property, is shortened in operation time, is decreased in operator's load and enables the execution of spraying to the normal surface with excellent operability. SOLUTION: This accelerator of hardening for spraying comprises a quick- hardening substance and an acrylic ester copolymer emulsion, this quick- hardening cement concrete comprises cement, the accelerator of hardening, a water reducing agent, inorganic powder and fiber and, in this spraying method to normal surface, the quick-hardening cement concrete is sprayed to frame skeleton and the frame is constructed. |
