Shearing characteristics of SCP-inserted clay specimens in triaxial compression test |
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| Authors: | Yoon-Sik Choo Wanjei Cho Choong-Ki Chung |
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| Institution: | 1.Samsung C&T Corporation,Seoul,Korea;2.Department of Civil and Environmental Engineering,Dankook University,Yongin,Korea;3.Department of Civil and Environmental Engineering,Seoul National University,Seoul,Korea |
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| Abstract: | Sand compaction piles (SCPs) have been widely applied to the construction on the soft ground for decades, due to not only the acceleration of the consolidation but also the enhancement of strength and stiffness of ground. However, physical behaviors of SCP-improved ground have not been clearly unveiled due to complex response of two distinct materials, compacted sand and soft clay, which are having quite different mechanical characteristics. Therefore, in this study, the mechanical characteristics of SCP composite ground were investigated via triaxial compression tests on SCP-inserted clay specimens. Tests were performed elaborately with four specimens with different replacement ratios. Based on the comparisons of consolidation and shearing behaviors of tested SCP-inserted clay specimens, the SCP effects on the stiffness and strength are also investigated. Even though the SCP-inserted clay specimens show stronger and stiffer behaviors than clay-only specimens, the effects vary on strength, stiffness, and volume change with regard to the applied replacement ratios. |
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