Recently, the municipal solid waste discharged from the home is being increased. How to develop the technique for the decontamination and recycle from the viewpoint of environmental pollution and lack of the final disposal space from reclamation sites is becoming an important subject. In this paper, a mixture of the harmless municipal solid waste incinerator ashes with the Ariake clay has been applied to improvement of the soft ground, and the effect of subsidence restraint has also been investigated based on numerical simulations and model experiments using centrifuge model test
