Effects of Temperature on Consistency Limits and Consolidation Properties of Clayey Soils

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  • 粘性土のコンシステンシーと圧密特性に及ぼす温度の影響
  • ネンセイド ノ コンシステンシー ト アツミツトクセイ ニ オヨボス オンド ノ エイキョウ

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<p>This study focuses on the effects of temperature on the consolidation property and consistency limit of clay for thermal improvement of soft clay ground. Although it is already known that an increase in temperature can accelerate the consolidation of clay, the degree of the temperature effect has not yet been generalised between various clays. A series of one-dimensional consolidation tests at different temperatures (17, 23, 35, 50, and 65°C) using 2 processed clays and 3 natural clayey soils dredged at ports are presented in this study. To evaluate the temperature effect on soil consistency, which might affect the consolidation behaviour, consistency limits of the clays were also evaluated at different temperatures. In addition, the effect of the difference in pore water on the consolidation properties was evaluated by a consolidation experiment using a CaCO3 solution and artificial seawater. As a result, it was confirmed that the consolidation coefficient could be estimated using the activity regardless of the type of clay. However, the influence of temperature on the consistency limit is different between general clay and swelling clay. </p>

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