Abstract
This study is intended as an investigation of differences in the consolidation yielding stress of Kanto loam under the two conditions, submerged and unsubmerged. The examination results under the both conditions indicated that in 76% of the whole samples, the stress value obtained from unsubmerged samples is 1.O to 1.2 times as high as submerged samples; and in the remaining 24%, the stress value of unsubmerged samples is 1.3 to 1.7 times as high as submerged samples. It was also discovered in the above-mentioned data that there is a relatively strong correlation between these two factors (the consolidation yielding stress of unsubmerged samples and of submerged samples); therefore, it may be possible to obtain the estimated stress value of either sample from the value of the other.
If the consolidation yielding stress value under the unsubmerged condition can be utilized to prevent ground subsidence at the site composed of Kanto loam, it should allow more economical design and planning than when the submerged condition is utilized. From this viewpoint, it is significant to study the mechanism under the unsubmerged condition that creates greater consolidation yielding stress than the submerged condition.
