(1. State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，Wuhan，Hubei 430071，China；2. Guangxi Guihe Expressway Company Limited，Laibin，Guangxi 545900，China)
Abstract：A set of laboratory model test equipment for electrochemical reinforcement of soft soil is designed to carry out a chain of model tests，the whole physical and chemical processes of ferruginous cemented piles are reconstructed，and structural features of cement piles are clarified. The electrochemical characteristics and the main control parameters of the electrolytic reinforcement in the pile are discussed through tracking and monitoring of current，resistance and salinity of the reinforced soil. On this base，the research on the strengthen distribution law，load capacity property and water stability is made though the micro-penetration test，indoor plate loading test and disintegration test. The results show that，the ranges of ferruginous cemented piles are respectively 8 times and 12 times thickness of electrode diameter. The strength of cemented soil is inversely proportional to the diameter distance of electrode. There is strong discontinuous surface between the coral layer and the affected layer. The cemented ground load force and the deformation modulus are 10 times better than the former，and it has good water stability.
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2013, Vol. 32 
