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Abstract ▼ AI-Helper

This study carried out a series of pilot scale test using semi rectangular soil box to configure the change of shear strength and calculate optimum stabilized time for soft clay ground applied electrokinetic injection and decomposition method. The soil contained in semi rectangular soil box was mari...

This study carried out a series of pilot scale test using semi rectangular soil box to configure the change of shear strength and calculate optimum stabilized time for soft clay ground applied electrokinetic injection and decomposition method. The soil contained in semi rectangular soil box was marine clay which was taken from west coast in Korea. In case of electrokinetic injection method, 1M sodium silicate was selected in cementation material, and the aluminium electrode was used for electrokinetic decomposition method. For preventing overflow of electric current due to high electrical conductivity in initial soil, constant electric current (1.0A) condition was established. To estimate long-term shear strength changes, the stabilized time were fixed from 0 day to 180 days with 6 kinds of conditions after 10 days electrokinetic application time. Test results showed that sudden increase in shear strength was developed around 15 days in all method. In case of 30 days stabilized time, gradual increase in shear strength was found but shear strength increase was not appeared after 60 days in all test conditions. Based on these test results, therefore, the minimum stabilized time required ground stabilization would be calculated definitely after application of electrokinetic cementation method.

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