Influence of Voltage on Pore Water Pressure for Soft Soil Treated with Electro-Osmosis Technique

Abstract

Geotechnical engineers have a difficult time working with soft soils because they take so long to reach their final settlement and drain water under pressure. Granular columns and other modern technology are just two of the many methods utilized to hasten this leveling. In this study, the alteration of clay soils with a granular column and the evacuation of water by an electric field were replicated using 2D engineering and a finite component. solid mechanics and electrical interfaces are built using the drag interface. Mohr-Coulomb relied on a granular column and fine clay soil at the mechanical contact and employed electro-osmosis to describe the model's electric field's impact. For a period of six months, the pore water pressure for the fine clay soil was calculated. The result showed that when the electric current is applied with a voltage (5 v) the pwp in soil increases in first two months and then begins to gradually decrease, reaching in sixth month (120 kPa) and when applied voltage increases (15 v) the pwp decrease in the first two months from the previous ratio of voltage then it begins to gradually decrease and reaches in sixth month (70 kPa), When applied voltage increases more (30 v) the pwp in the soil decreases in first two months from the previous ratios of voltages, then it begins to gradually decrease and reaches (40 kPa), The percentage of water leaving the soil when an electric current is applied from (5-15 v) was (64%) and when voltage increased to (15-30 v) became (75%) which means the applied voltage increases, cause more water is discharged from the soil. The soil settlement also increases with an increase in the voltage, as the improvement percentage and the water exit from the soil (50%) at (5-15 v) and (71%) at (15-30 v).