Saturated and Unsaturated Mechanical Properties of Typical Soils Distributed in Northeast Thailand

JIRCAS Journal
ISSN 13407686
書誌レコードID(総合目録DB) AA11030483

We clarified the saturated and unsaturated mechanical properties of typical soils distributed in Northeast Thailand. We sampled a soil with a yellow color (Yellow soil) as a typical soil. The mechanical properties of the Yellow soil were investigated by using oedometer, pressure plate and triaxial test apparatuses. The results of oedometer tests showed that yield stress increased as suction increased, the slopes of e - logσv (e: void ratio, σv: vertical stress) curves in the elastoplastic region were affected by the suction, and this soil expressed a large amount of volume reductions due to soaking of water. The results of the pressure plate tests showed that the air entry value was about 10kPa, and the volume change behavior due to suction was elastic when the suction value exceeded about 30kPa. The results of triaxial compression tests revealed that by comparing the specimens with the same confining pressures but different suction values, the higher suction the greater deviator stresses of specimens, the shear strength also increased with increasing suctions, however, the suction influence became weaker as the confining pressure increased.

作成者 Yuji KOHGO Surendra Bahadur TAMRAKAR Hui Gang TANG
著者キーワード collapsible soil sandy soil suction unsaturated soil
公開者 Japan International Research Center for Agricultural Sciences
国立情報学研究所メタデータ主題語彙集(資源タイプ) Journal Article
開始ページ 75
終了ページ 91
権利 Japan International Research Center for Agricultural Sciences
言語 eng