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An Analysis of Behavior and Strength of Cement using Improved Materials by Laboratory Model Test  

Oh, Philjin (서울시립대학교 토목공학과)
Park, Minchul (서울시립대학교 토목공학과)
Lee, Song (서울시립대학교 토목공학과)
Publication Information
Journal of the Korean GEO-environmental Society / v.13, no.7, 2012 , pp. 19-29 More about this Journal
Abstract
For foundation of Port structure, it is essential geotechnical understanding about feature of ground and the geologic formation which is different to terrestrial ground. What is most important is the understanding of soft ground clay, which is much softer than terrestrial ground. To build foundation of a port structure which is mainly gravity based on the special geographical circumstance that is on the sea, the improvement method of foundation should be applied according to soft clay ground features. Therefore, in this study, the behaviors of improved materials with strength were analyzed on the soft clay foundation where suppose to be located the foundation of port structure. The laboratory model test has been conducted in 2 cases with unconfined compression strength of improved materials, 25kPa and 125kPa. Cement, water, and in-situ soft clay were combined at a fixed rate and made a shape of 5cm diameter ${\times}$ 70cm height column. Improved materials were located with replacement ratio(11%, 35% and 61%) in 38cm diameter ${\times}$ 80cm height cylinder. Finally, the stress distribution ratio on the improved materials and clay, settlement was analyzed by applying a load of 10kPa, 30kPa, and 50kPa.
Keywords
Port structure; Improved materials; Replacement ratio; Stress distribution Ratio; Laboratory model test;
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