Electrokinetic Stabilization of Marine Clayey Soils by Different Injection Procedures

Abstract

The nonuniform improvement of strength in marine clayey soils is one of a primary problem observed when electroosmosis treatment is conducted in these soils. Five group tests were conducted to access the effect of electrokinetic stabilization on treatment of soft clay by different injection procedure of Ca2+ and SiO32- ions. The current, drainage rate, energy consumption and bearing capacity were analyzed. The results show that the injection of CaCl2 and Na2SiO3 at the anode and cathode, respectively, is the most effective operation procedure. Consequently, most of the soil surface bearing capacity is higher than 180kpa, accounting for 70.4% of the total soil sample area, the increase in strength was attributed to injection of up to 43% of chemical additives after a 14-day curing were measured in the middle zone.