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29replaced with method of freezing columns and thawing within the matrix soil. Thus, theauthors acknowledged radical difference between installation methods between thelaboratory study and the field applications.Case 2 – Fang and Yin, 2007 – Responses of Excess Pore Water Pressure in Soft MarineClay around a Soil-Cement Column (Hong Kong Polytechnic University, Hong Kong)This study was performed on soil-cement columns at Hong Kong Polytechnic University.The columns were built at 50 mm in diameter and at 100 mm and 200 mm shaft lengths. Theconstruction of the columns was performed by a method of Deep Cement Mixing (DCM),where Portland cement concrete was used as a main component of the column compositionmixture.The soil where the columns were placed was classified as Hong Kong Marine Clay. Specificgravity of the material was experimentally identified at 2.58 with the moisture content valueof 86 percent, liquid limit of 51 percent and plastic limit of 26 percent. Soil was consolidatedto 90 percent level of consolidation for the period of twelve days prior to insertion of thecolumns. The placement and testing of the columns was performed within cylindrical steelmold of 300 mm in diameter and 450 mm in height (Figure 14).300mm DIA.CHAMBERHONG KONGMARINE CLAY50mm DIA.DCM COLUMNFigure 14: Treated ground model consisting of preconsolidated untreated soft clay anda cement mixed soil column at the center in a cylinder mold (Fang and Yin, 2007)