Abstract
The compaction grouting method is used for soil foundations beneath existing structures as liquefaction countermeasures. It improves the ground by injecting mortar into the ground with high pressure. However, heaving or stress change, which affects the existing structures, may be caused in the grounds by the injection. Model tests on the compaction grouting method were conducted in order to investigate the soil behaviors. In the tests, its execution procedures were simulated on model grounds. Shaking table tests were, also, conducted after the execution. This paper describes the model test results and some discussions on the similitude of the model test for the predictions of ground behaviors during actual executions.
