| 摘要 |
PURPOSE:The titled composition kept stably for a long time and having an easily controllable gel time when mixed with a water glass soln. which comprises Mg or Al sulfate, sulfuric acid and glyoxal. CONSTITUTION:After glyoxal is added to an aq. soln. contg. not more than 25g of sulfuric acid in a wt. ratio of sulfuric acid to glyoxal of higher than 1, Mg or Al sulfate, e.g., Al2(SO<4>), is added and dissolved, and the total volume of the soln. is adjusted to 100cc to obtain a curing agent composition for water glass. Then a water-glass soln. is mixed with said curing agent composition. EFFECT:It is possible to easily automate preparation of a grout and to control a gel time in a sure and reliable manner, so that a coagulated product with high strength is obtd. USE:Strengthening and water stopping for soft ground. |
