| abstract |
(57) [Summary] An injection material using a pozzolanic reactant used in civil engineering and construction fields does not increase in viscosity after wet pulverization, has excellent injectability, and has a slurry temperature of 50 ° C or higher. The present invention provides an injection material having excellent strength development properties by wet pulverization until the material becomes wet. An injection material comprising a slurry containing a pozzolanic reactant which has been wet-milled, and an injection material further comprising an alkali salt, comprising a dispersant, particularly polyacrylic acid, and a retarder, particularly It is an injection material containing an organic acid-based retarder, and is a method of applying a retarder that is wet-pulverized until the slurry temperature becomes 50 ° C. or higher, and injected immediately after the pulverization. |