ABSTRACT
The purpose of present study is to obtain the fundamental data of urethane grout for forepoling as one of the auxiliary method. Especially, the solidified shape of urethane grout was discussed in the model or actual ground with various permeability coefficients. Firstly, the laboratory test on solidified shape, which had two parameters (permeability coefficient & foaming pressure), was carried out. Finally, solidified shape under the various ground conditions was verified in the field test. From the test result, it was ascertained that the permeability coefficient of ground significantly influenced the penetration mechanism and solidified shape of urethane grout.
