| 摘要 |
PROBLEM TO BE SOLVED: To provide a novel use of an ion exchange resin and to reduce the amount of unnecessary excavated mud produced in boring a ground while restricting the cost of material such as a fluidizing agent.SOLUTION: A boring method includes a flowability applying process for adding a dispersant derived from ion exchange resin and a retardant to soil in an original position 3 forming a subgrade 2 to apply flowability to the soil. For example, the flowability applying process is a process for adding the dispersant and the retardant to the soil in the original position 3, furthermore adding cement slurry and mixing the soil and the cement slurry in a ground improvement method such as an SMW construction method. |
