Electro-Osmosis Chemical Treatment of High-Salinity Soft Marine Soils: Laboratory Tests

Zhang, Lei; Jing, Liping; Wang, Ning-wei; Chen, Fang; Li, Yongqiang; Shan, Zhendong

doi:10.2174/1874149501711010109

Cited by 6 publications

(2 citation statements)

References 22 publications

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“…The soil with electro-osmosis keeps growing, total water output is related to the amount of electrical current. Fig 2 shows that the total water output value increased along with increasing electric current [17], [28]. On the other hand, the electrodes' distance affects the total water output during the electro-osmosis process.…”

Section: A the Effect Of Electroosmosis On Total Water Outputmentioning

confidence: 93%

The Influence of Electroosmosis on Compressibility of Tanon’s Clay

Surjandari¹,

Purwana²,

Wijaya³

2021

International Journal on Advanced Science, Engineering and Information Technology

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Clay soils have a tendency to have high water content, high plasticity, long decline time, low permeability, and low bearing capacity. This study aims to determine the effect of electro-osmosis on clay soil compressibility. This research employed clay taken from Tanon, Sragen, Central Java. Electro-osmosis testing is carried out by physical model experiments using variations in the distance between the electrodes, which are 30 cm and 45 cm, as well as variations in the potential difference of 0; 4,5; 9; 12 volts. The physical model of box-shaped electro-osmosis is 50 x 30 x 15 cm. The test results show that electro-osmosis can reduce the compressibility of clay soil. This can be seen in the compressibility index (Cc) value of the soil, which experienced the greatest decrease reaching 60% compared to the land that was not electroosmosed. The greater the value of soil water content, the greater the compressibility of the soil. Soil strain is reduced by 35% compared to unelectroosmotic soil. The modulus of elasticity (Eedo) of the soil increased by 137%. The most water volume that comes out is 94 ml at a voltage of 12 volts and a distance of 30 cm. The process of electro-osmosis is influenced by the distance and potential differences that are given. However, the most influential factor is the distance between the electrodes. This research proves that the electro-osmosis process can reduce the compressibility of clay soil.

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Section: A the Effect Of Electroosmosis On Total Water Outputmentioning

confidence: 93%

The Influence of Electroosmosis on Compressibility of Tanon’s Clay

Surjandari¹,

Purwana²,

Wijaya³

2021

International Journal on Advanced Science, Engineering and Information Technology

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“…Based on prior research, electro-osmotic consolidation proved to be an economical and time-saving method for treating low permeable soft soils [7,[12][13][14]. Critical laboratory-scale studies should be performed for field application to predict the feasibility, suitability, availability of resources, cost-effectiveness and time consumption of the process and to anticipate the influence of potential gradient and its effect on the required parameters [4,[15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Consolidation Assessment of Marine Clay Using Electrokinetic Coupled with Constant Load

Singh¹,

Paramkusam²,

Prasad³

2022

cea

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In Marine clays, the consolidation phenomenon is a significant issue of concern. For this, an innovative electrokinetic consolidation method was adopted by coupling the conventional consolidation technique with a constant voltage gradient. A series of tests were performed on reconstituted marine clay samples for constant loading intensity of 4kg/cm² coupled with a constant DC voltage of 2, 4 and 6V. Various parameters such as deformation, void ratio, current, pH, voltage and moisture content were continuously monitored to compare with test results of conventional Incremental loading (IL) and constant loading (CL) techniques. In the case of electrokinetic (EK) coupled loading, with an increase in voltage gradient, the values obtained for voltage and current were also increased to maximum and then decreased afterwards. Microfabric changes were also visible in soils collected at anode and cathode, which were evidenced with the images of scanning electron microscopy (SEM) data obtained before and after EK consolidation tests when compared with original marine clay. The constant loading intensity of 4kg/cm 2 with a 4V electric gradient resulted in higher compression and better consolidation characteristics than other loading conditions.

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