ABSTRACT
When looking at the strength of stabilized soil, the wet method of deep mixing in Japan (CDM) creates stabilized soil with a strength exceeding 1MN/m2 in terms of unconfined compressive strength, qu. The Japanese dry method of deep mixing (DJM) mostly employed in a group column type creates stabilized soil with a strength around 500 kN/m2. The Swedish lime columns are ordinarily used at a strength less than 150 kN/m2. The difference in the strength naturally causes differences in the relative stiffness of stabilized and unstabilized soils, which strongly influences the overall behavior of the improved ground as a system. A further difference is that the Japanese stabilized soils are practically impermeable materials, whereas the stabilized soil in the Nordic applications is considered as vertical drainage.
