| abstract |
The present invention is a method for improving ground, the method comprising introducing a hydraulic powder, at least one compound [hereinafter, referred to as compound (a)] selected from among sodium hydrogen carbonate, sodium sulfate, sodium thiosulfate, sodium dithionite, and sodium pyrosulfite, and at least one compound [hereinafter, referred to as compound (b)] selected from among hydroxymethanesulfonic acid, salts thereof, hydroxymethanesulfinic acid, and salts thereof, into the soil, wherein the compound (a) is mixed with the compound (b) in a (compound (a))/(compound (b)) mass ratio of 50/50 to 99/1 and the compound (a) and compound (b) are incorporated in a total amount of 0.5-20.0 mass% with respect to the hydraulic powder. |