| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a chemical for grouting which is the suspension type one comprising a ternary system of water glass, a slag and an alkali aluminate, capable of especially readily regulating the gelation time from the flash setting to several tens of min, homogeneously consodilated, excellent in permeability, further capable of preparing both a flash setting grouting material and a slow setting grouting material in the same blending system and enabling the composite grouting by the primary and secondary groutings. SOLUTION: This chemical for grouting is the suspension type chemical for grouting comprising water glass, a slag and an alkali aluminate and is composed so as to satisfy the following conditions (a), (b) and (c): (a) >=2.8 molar ratio of water glass, (b) >=5000cm<2> specific surface area of the slag and (c) 2-20 weight ratio SiO2 /Al2 O3 of the amount of the SiO2 in the water glass to the amount of Al2 O3 in the alkali aluminate. The chemical for grouting is composed by including an alkaline agent in the ternary system.</p> |
