Chemical electro-osmosis with an injected saline solution can be described as an efficient method for adjusting the soil microstructure and improving soil conductivity, and the effect of electro-osmotic consolidation on soft foundations can also be improved by this novel technology in regard to foundation treatment. To better study the electro-osmotic characteristics of soft clay from Taizhou with different grouting solutions, a series of chemical electro-osmotic experiments concerning the injection of CaCl₂, MgCl₂, NaCl, KCl, and deionized water were conducted in the laboratory based on custom test devices. The actual treatment effects of these experiments were compared by monitoring the drainage, current, voltage, elemental mass fractions in the soil, and soil structure. The chemical electro-osmotic method was further studied from a theoretical perspective based on the inherent link between the macro- and microlevel indexes. The results of the model test indicated that the crystal structure of the soil changed from an initial flocculated structure to a granular or laminated structure with the injection of CaCl₂ and MgCl₂ saline. Na⁺ was hereby replaced by multicharged ions, which served as the key factor that affected both the drainage efficiency and conductivity of the electro-osmotic process. Moreover, a novel one-dimensional electro-osmotic consolidation equation was introduced that considered variations in the electro-osmotic permeability coefficient, which better illustrated how the excess pore water pressure was deduced when compared with Esrig’s consolidation equation. Furthermore, the results of this experiment may be adopted as a reference or as evidence for the subsequent promotion and application of the electro-osmosis method.

中文翻译：

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各种盐溶液对台州软土电渗特性的研究

注入盐溶液的化学电渗可以描述为一种调节土壤微结构和改善土壤电导率的有效方法，并且这种新技术在地基处理方面也可以改善电渗固结对软土地基的影响。 。为了更好地研究泰州软黏土在不同灌浆溶液中的电渗特性，针对CaCl ₂，MgCl ₂的注入进行了一系列化学电渗实验。NaCl，KCl和去离子水是在实验室中基于定制测试设备进行的。通过监测排水，电流，电压，土壤中的元素质量分数和土壤结构，比较了这些实验的实际处理效果。基于宏观和微观指标之间的内在联系，从理论角度进一步研究了化学电渗方法。模型试验的结果表明，通过注入CaCl ₂和MgCl ₂盐水，土壤的晶体结构从最初的絮凝结构变为颗粒状或层状结构。钠⁺因此被多电荷离子取代，这是影响电渗过程的排水效率和电导率的关键因素。此外，引入了一种新的一维电渗固结方程，该方程考虑了电渗渗透率系数的变化，与Esrig的固结方程相比，它可以更好地说明如何推算出多余的孔隙水压力。此外，该实验的结果可以作为参考或作为随后的电渗方法的推广和应用的证据。