| abstract |
PROBLEM TO BE SOLVED: To provide a spray material capable of reducing rebound during spraying and further reducing dust, and a spraying construction method using the same. A spraying material comprising cement concrete and a quick-setting agent slurry and a spraying method for spraying the spraying material, wherein a naphthalenesulfonic acid formalin condensate is used in an amount of 0.05 to 100 parts by weight of cement. 5 parts by weight (solid content) on the cement concrete side, the cellulose, 0.001 to 0.5 parts by weight per 100 parts by weight of the cement separately blended with the quick setting agent slurry side, the cement The concrete is characterized by containing a sulfate. |