A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A Study on Electrokinetic Dewatering of Saturated Soil
Differential settlements of foundation rested on saturated soil may lead to a disaster if not appropriately studied. Conventional dewatering techniques are time-consuming and have some limitations. Electrokinetic dewatering is one of the effective methods used to remove water from saturated clay having low permeability. The present study deals with a series of laboratory experiments performed on saturated clay to study the influence of (i) spacing of electrodes, (ii) configuration of electrodes, (iii) number of cathodes and anodes, and (iv) pH of soil on the performance of electrokinetic dewatering. A custom-designed wooden watertight box with internal dimensions of 40 cm length, 40 cm breadth, and 30 cm height was used for experiments. Hollow circular stainless steel tubes with 1.9 cm diameter, 25 cm length having perforations were used as electrodes. Water collected at the cathode was removed and measured manually. The results confirm that increasing the spacing between the anode and cathode causes more area under the influence of electric field, which increases dewatering efficiency. One-dimensional configuration is better than rectangular and hexagonal configurations. Dewatering increases with an increase in number of cathodes. A decrease in pH of soil results in less dewatering competence. This study will be beneficial for ground improvement projects carried out in marshy lands, coastal roads, etc., for improving subgrade soil.
A Study on Electrokinetic Dewatering of Saturated Soil
Differential settlements of foundation rested on saturated soil may lead to a disaster if not appropriately studied. Conventional dewatering techniques are time-consuming and have some limitations. Electrokinetic dewatering is one of the effective methods used to remove water from saturated clay having low permeability. The present study deals with a series of laboratory experiments performed on saturated clay to study the influence of (i) spacing of electrodes, (ii) configuration of electrodes, (iii) number of cathodes and anodes, and (iv) pH of soil on the performance of electrokinetic dewatering. A custom-designed wooden watertight box with internal dimensions of 40 cm length, 40 cm breadth, and 30 cm height was used for experiments. Hollow circular stainless steel tubes with 1.9 cm diameter, 25 cm length having perforations were used as electrodes. Water collected at the cathode was removed and measured manually. The results confirm that increasing the spacing between the anode and cathode causes more area under the influence of electric field, which increases dewatering efficiency. One-dimensional configuration is better than rectangular and hexagonal configurations. Dewatering increases with an increase in number of cathodes. A decrease in pH of soil results in less dewatering competence. This study will be beneficial for ground improvement projects carried out in marshy lands, coastal roads, etc., for improving subgrade soil.
A Study on Electrokinetic Dewatering of Saturated Soil
Lecture Notes in Civil Engineering
Tutumluer, Erol (editor) / Nazarian, Soheil (editor) / Al-Qadi, Imad (editor) / Qamhia, Issam I.A. (editor) / Sutar, Abhishek A. (author) / Rotte, Veerabhadrappa M. (author)
2021-08-31
13 pages
Article/Chapter (Book)
Electronic Resource
English
A Study on Electrokinetic Dewatering of Saturated Soil
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