| Summary: | 碩士 === 國立臺灣科技大學 === 營建工程系 === 106 === Recent researches indicate that electroosmotic treatment can effectively improve the cone penetration strength of kaolinite soil, but not Taipei silty clay. Taipei silty clay was consist of high content of illite soil. The objective of this study is thus to investigate the efficacy of electroosmotic chemical injection between illite soil and kaolinite. Four phases in electroosmotic test were investigated: (1). Basic electroosmotic chemical treatment for Illite soil, (2). Different sequences for injecting chemical solutions, (3). Determined a suitable treatment time and concentration of chemical solutions, (4). Injected without chemical solutions. Results show that the electroosmotic treatment could not efficiently improve the cone penetration strength of illite soil compared to kaolinite soil. The reason for this phenomenon was due to high cation exchange capability (C.E.C.) value. Increasing the pH value of initial soil condition also could not increase the performance of the electroosmotic treatment. A limit improvement area could be observed in the areas near anode (NA) and far away from anode (FA) when sodium silicate was injected before CaCl2. Furthermore, to enhance the efficacy of electroomosis on illte soil the basic mechanism of each chemical solution needs to be studied. Investigate various injection sequences that can increase the efficacy of injection of chemical solutions.
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