| 摘要 |
PURPOSE:To prevent the corrosion of a pump for a liquid B by grounting jointly the liquid B with a specific pH, consisting of a hardener and a metal corrosion inhibitor, and a liquid A consisting of an aqueous water glass solution into the ground. CONSTITUTION:A liquid B, consisting of a hardener composed of sulfuric acid or an alkali metal hydrogen sulfate, e.g., sodium hydrogensulfate, potassium hydrogensulfate, etc., and a metal corrosion inhibitor selected from alkylamines, thiazoles, etc., is regulated in its pH to 2-2.5 by the addition of a water glass whose SiO2/ Na2O is 3.8-4.2 by molal ratio. Then, the liquid B is mixed with a liquid A consisting of an aqueous water glass solution whose SiO2/Na2O is 1-3 by molal ratio through an iron or stainless steel pump and then grouted into the ground. |
