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Improving the Characteristics of a Lean Clay by Electrokinetic Treatment
International Journal of Civil Engineering ( IF 1.7 ) Pub Date : 2021-02-19 , DOI: 10.1007/s40999-021-00604-0
Ikrema Hassan , Eltayeb Mohamedelhassan

An experimental study was carried out to investigate the effect of electrokinetic treatment on the axial load capacity of a deep foundation model, embedded in a soft clay. Three series of tests were carried out using five identical electrokinetic treatment cells under applied voltages of 0, 5, 10, 15 and 20 V. Intermittent and continuous electric currents were implemented in the first two series with the similar energy consumptions to investigate the effect of the type of current in the improvement. In third series of tests, current intermittence was used in four tests with different applied voltages of 5, 10, 15 and 20 while the energy consumption was kept the same in the tests. The electric current and energy consumption were periodically recorded during the tests. At the end of the electrokinetic treatment, the axial load capacity of the foundation model was determined. Vane shear tests along with liquid and plastic limits tests were also conducted on the soil after the treatment. The results showed that electrokinetics had significantly increased both the shear strength of the soil and axial load capacity of the foundation model and the increases were proportional to the energy consumption. In the third series, the increases in the load capacity were found to be similar in the four tests. The maximum axial load capacity after the treatment was 336 N compared to 19 N in the control test. It was found that using the intermittent current reduces the corrosion of electrode.



中文翻译:

通过电动处理改善粘土的特性

进行了一项实验研究,以研究电动处理对埋在软粘土中的深层基础模型的轴向承载能力的影响。使用五个相同的电动处理单元在施加的0、5、10、15和20 V电压下进行了三个系列的测试。在前两个系列中以类似的能耗实施了间歇和连续电流,以研究能量消耗的影响。改善中的电流类型。在第三系列测试中,在四个施加了5、10、15和20的不同电压的测试中使用了电流间歇性,而能耗却保持不变。在测试期间定期记录电流和能耗。在电动治疗结束时,确定了基础模型的轴向承载能力。处理后还对土壤进行了叶片剪切试验以及液体和塑料极限试验。结果表明,电动势显着增加了土的抗剪强度和基础模型的轴向承载能力,并且增加与能量消耗成正比。在第三个系列中,在四个测试中发现负载能力的增加是相似的。处理后的最大轴向负载能力为336 N,而对照测试中为19N。发现使用间歇电流减少了电极的腐蚀。结果表明,电动势显着增加了土的抗剪强度和基础模型的轴向承载能力,并且增加与能量消耗成正比。在第三个系列中,在四个测试中发现负载能力的增加是相似的。处理后的最大轴向负载能力为336 N,而对照测试中为19N。发现使用间歇电流减少了电极的腐蚀。结果表明,电动势显着增加了土的抗剪强度和基础模型的轴向承载能力,并且增加与能量消耗成正比。在第三个系列中,在四个测试中发现负载能力的增加是相似的。处理后的最大轴向负载能力为336 N,而对照测试中为19N。发现使用间歇电流减少了电极的腐蚀。处理后的最大轴向负载能力为336 N,而对照测试中为19N。发现使用间歇电流减少了电极的腐蚀。处理后的最大轴向负载能力为336 N,而对照测试中为19N。发现使用间歇电流减少了电极的腐蚀。

更新日期:2021-02-19
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