| 摘要 |
PROBLEM TO BE SOLVED: To manifest a strength higher than a conventional solidifying material while increasing a usage of surplus soil. SOLUTION: The solidifying material containing (A) cement, (B) blast-furnace slag fine powder and (C) gypsum at the composition weight ratio of the components [(A):(B):(C)]=(30-80):(10-70):(3-15) is mixed and agitated to a ground as an object in powder or slurry, and the unconfined compressive strength of the ground is set in 80 kgf/cm2 or more. Accordingly, the ground on a construction field can be improved to high strength, and the ground improvement method is made available for an improvement in various soil such as sandy soil, silt or the like and ground improvement on the construction field at a time when depth up to a large-scale building and a bearing ground is particularly deep, a time when upper load is large or the like.
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