Strength improvement by surcharge and vacuum preloading

This study used Kaolin as the sample material to examine the impact of vacuum and surcharge preloading on the undrained shear strength and soil-water characteristic curve of fine-grained soil. Consolidated kaolin samples were trimmed into cylindrical specimens and subjected to different pre-consolid...

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書目詳細資料
主要作者: Lew, Chloe Yan Bin Jmi
其他作者: Leong Eng Choon
格式: Final Year Project
語言:English
出版: Nanyang Technological University 2023
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在線閱讀:https://hdl.handle.net/10356/167880
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實物特徵
總結:This study used Kaolin as the sample material to examine the impact of vacuum and surcharge preloading on the undrained shear strength and soil-water characteristic curve of fine-grained soil. Consolidated kaolin samples were trimmed into cylindrical specimens and subjected to different pre-consolidation pressures. Soil specimens were tested to determine the stress-strain curves and undrained shear strength. The study also plotted SWCCs in terms of volumetric water content, gravimetric water content, and degree of saturation. The soil specimens' air-entry value was deduced from the plotted S- SWCC. The results showed that vacuum preloading significantly improved the undrained shear strength of the soil, and the strength improvement was more significant compared to surcharge preloading. The study suggests that further research should be performed to investigate the influence of vacuum consolidation on other fine-grained soils. Overall, the findings from this study provide valuable insights into the use of vacuum preloading to improve soil strength for various engineering applications.