| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain the subject chemical agent liquid easy in the adjustment of gelation time into a relatively long time, excellent in permeability, high in agglomeration strength and suitable for injection into water-permeable grounds such as sandy soil by adding specific other components to a ground injection chemical agent liquid containing water glass and a cement. SOLUTION: The water glass-cement chemical agent liquid comprises (A) a suspension type chemical agent liquid used for injection into grounds and containing (A1 ) water glass having a SiO2 /Na2 O molar ratio of 2.8-3.5, etc., and (A2 ) a cement such as the ordinary Portland cement, (B) an alkali agent such as sodium aluminate and (C) an alkali metal bicarbonate salt in order to retard the gelation time of the component A and, if necessary, (D) slag (e.g. particulate slag having an average particle diameter of <=10μm and a specific surface area of >=5000cm<2> /g) in order to remarkably improve the precipitation of the component A2 .</p> |
