| abstract |
(57) [Summary] [Problem] The amount of dust generated during spraying work is small, Provided are a composition for a liquid quick-setting agent, a liquid quick-setting agent, a spraying material, and a method for producing the same, which have good quantitative accuracy of a material and good mixability with cement concrete, and have excellent setting properties. A liquid quick-setting agent containing three elements of aluminum, sulfur and fluorine as elemental components and an amino alcohol compound as a compound component, and containing these three elements and the amino alcohol compound in a predetermined composition. A composition, a liquid quick-setting agent, a spray material, and a spray method using the spray material. Compared with conventional products, the spray material can reduce the amount of dust at the time of spraying and reduce the rebound rate. Since it has good characteristics, it is suitable for a construction method in which the spraying material is sprayed on tunnel wall surfaces such as roads, railways, and headraces, and on slopes. |