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Laboratory determination of coefficient of consolidation from pore water pressure measurement

机译:通过孔隙水压力测量确定固结系数的实验室

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摘要

In the recent past, many studies have been carried out on the determination of coefficient of consolidation (c(v)) from the time (t)-deformation (d) data obtained from conventional consolidation tests. Several researchers have also proposed different curve fitting procedures for determining cv from the t-d data. It is anticipated that the cv values obtained from the t-d data may be influenced by initial and secondary compressions. Nevertheless, the pore water pressure data measured during the consolidation process will be independent of initial and secondary compressions. In this study, the conventional Asaoka (1978) method is extended to evaluate cv and end-of-primary (EOP) consolidation from the pore water pressure data measured from laboratory experiments. Laboratory experiments were carried out on the modified one-dimensional consolidation apparatus on different remoulded clay samples measuring pore water pressure during the consolidation process. The cv and EOP computed from the proposed approach have been compared with the results of the t-d data and found to be in good agreement.
机译:在最近的过去,已经进行了许多关于从常规固结试验获得的时间(t)-变形(d)数据确定固结系数(c(v))的研究。一些研究人员还提出了不同的曲线拟合程序,用于根据t-d数据确定cv。可以预料,从t-d数据获得的cv值可能会受到初始压缩和二次压缩的影响。然而,在固结过程中测得的孔隙水压力数据将与初始和二次压缩无关。在这项研究中,常规的Asaoka(1978)方法已扩展到通过实验室实验测得的孔隙水压力数据来评估cv和初生末(EOP)固结。在改进的一维固结设备上对不同的重塑粘土样品进行了实验室实验,测量了固结过程中的孔隙水压力。从提出的方法计算出的CV和EOP已与t-d数据的结果进行了比较,发现它们之间具有很好的一致性。

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    Vinod, JS; Sridharan, A;

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  • 年度 2015
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