| 摘要 |
<p>A suspension-type grouting liquid for injection into a ground includes sodium aluminate having a mol ratio of 10 or more; and slag, wherein the mol ratio of sodium aluminate is defined as molar concentration of Na2O/molar concentration of Al2O3. Preferably, the slag is fine grained and has a specific surface area of 8000 cm2/g or more. The grouting liquid may further include at least one additional material selected from the group consisting of cement and dispersant. Preferably the cement is fine grained and has a specific surface area of 8000 cm2/g or more. The grouting liquid shows high strength of consolidation in use in spite of having a low viscosity and a long gelation time, and shows a long duration of the strength of consolidation. Another embodiment of the grouting liquid includes water glass having a mol ratio of 2.5 or less; and slag, wherein the mol ratio of the water glass is defined as molar concentration of SiO2/molar concentration of Na2O, and wherein the slag is fine grained and has a specific surface area of 8000 cm2/g or more. Yet another embodiment of the grouting liquid includes water glass; sodium aluminate; and slag, wherein the grouting liquid has a molar concentration of SiO2 in the water glass/total molar concentration of Na2O in the water glass and sodium aluminate of 2.5 or less, and wherein the slag is fine grained and has a specific surface area of 8000 cm2/g or more.</p> |
