Hydraulic and earth engineering – Earth treatment or control – Chemical
Patent
1994-10-20
1996-08-27
Bagnell, David J.
Hydraulic and earth engineering
Earth treatment or control
Chemical
106624, E02D 312
Patent
active
055494196
ABSTRACT:
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 Na.sub.2 O/molar concentration of Al.sub.2 O.sub.3. Preferably, the slag is fine grained and has a specific surface area of 8000 cm.sup.2 /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 cm.sup.2 /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 SiO.sub.2 /molar concentration of Na.sub.2 O, and wherein the slag is fine grained and has a specific surface area of 8000 cm.sup.2 /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 SiO.sub.2 in the water glass/total molar concentration of Na.sub.2 O 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 cm.sup.2 /g or more.
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Bagnell David J.
Kyokado Engineering Co. Ltd.
Lagman Frederick L.
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