【摘 要】
：
In order to obtain the earth pressure coefficient at rest (K0) at higher consolidation pressures during secondary compression,a series of K0 tests for saturated
【机 构】
：
State Key Laboratory for Geomechanics and Deep Underground Engineering, School of Architecture and C
【基金项目】
：
supported by the National Natural Science Foundation of China;supported by China Postdoctoral Science Foundation;supported by Fundamental Research Funds for Central Universities,China
论文部分内容阅读
In order to obtain the earth pressure coefficient at rest (K0) at higher consolidation pressures during secondary compression,a series of K0 tests for saturated reconstituted clay were conducted.The results indicate that the measured K0 in secondary compression can be described by equations related to internal fiiction angle,secondary compression coefficient,compression index,recompression index,and sediment time.Effects of consolidation pressures and sediment time on K0 during secondary compression can be attributed to cementation (part of cohesion) increase and internal friction angle decrease.Cementation increase leads to nonlinear variation for K0 and internal friction angle decrease results in increase of K0.K0 computed by equations associated with internal friction angle is overestimated at apparent lower consolidation pressures with different sediment time,which agrees with the measured values well at apparent higher consolidation pressures.
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