The objective of this paper is to investigate the improvement of fine-grained soils by electrokinetic injection of silicate grouts. The sodium silicate solution with 5, 10 and 20% concentrations are injected from the anode compartment by electrical gradient equal to 1 V/cm across silty specimens for a week while 10% acid phosphoric solution is used as the catholyte to control pH. It is shown that silicate precipitate into the soil pores and increases the cementation of the soil. For all silicate concentrations, the injection of Na-silicate solution increases the strength adjacent to the anode significantly (between 400 to 700%) and more concentration generated more strength. Furthermore, decreasing the silicate concentration increases the penetration length of the grout. Injection of Na- silicate solution from anode chamber also decreases the electroosmosis flow significantly, i.e., the soil is treated with relatively low volume change by this technology.