締固め土の水浸沈下について

Abstract

Using oedometers, the settlements due to submergence are tested with compacted Fujinomori clay and decomposed granite soil which D-value are from 75% to 100%.
The specimen are swelled at p=0. The swelling volume of Fujinomori clay is increased with D-value but that of decomposed granite soil is smaller than 0.07mm irrespective of D-value.
The settlement due to submergence ⊿S_s is increased with consolidation stress p and at some stress, ⊿S_s is attained its maximum and is decreased with more stress increment.
The effect of D-value on settlement ⊿S_s is conspicuous. The settlement ⊿S_s of compacted soil which D-value is greater than 85% has little problem, but that D-value smaller than 80% is increased with lowering of D-value.
The trend of settlement submerged at p=0 is similar of the trend with settlement submerged at p＞0, but volume of settlement is not equal to each other.