| 摘要 |
PROBLEM TO BE SOLVED: To provide a suspended grout compsn. which is injected for the purpose of soil improvement, such as prevention of liquefaction, slip failure, and uneven settlement, exhibits a permanent ground solidification function, is excellent in on-site primary dispersion stability, and has both high-speed penetrating properties and quick solidification properties. SOLUTION: This grout contains (A) quenched blast furnace slag having a 95 wt.% particle size (on a particle size integration curve) of at most 15μm and a specific surface area in a range of 0. 85-3 m<2> /g, (B) slaked lime having a 95 wt.% particle size (on a particle size integration curve) of 30μm or lower and a specific surface area in a range of 1-50 m<2> /g, (C) an inorg. alkali metal carbonate, and (D) an org. polymeric dispersion aid which has an inertia square radius of at least 150Åin a dilute (0.01-1 wt.%) aq. soln., the ratio of water/(slaked lime + quenched blast furnace slag) being 1-6, the ratio of the dispersion aid/(slaked lime + quenched blast furnace slag) being 0.005-0.05, and the ratio of the alkali metal carbonate/quenched blast furnace slag being 0.02-0.5. |
