| Critical State Sedimentation Line of Soft Marine Clays |
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| 作者姓名： | HONG Zhen-shun |
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| 作者单位： | Institute of Geotechnkal Engineering，Southeast University，Nanjing 210096，China，Geotechnical Institute，Hohai University，Nanjing 210024，China，Department of Civil Engineering，Center for Geotechnical Engineering Science，University of Colorado at Denver，Denver，CO 80217，USA |
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| 基金项目： | This research project was financially supported by the Ministry of Science and Technology, Japan(Domestic Research Fellowship, 1999-2001) |
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| 摘 要： | The compression behavior responsible for unity sensitivity is very valuable in quantitative assessment of the effects of soil structure on the compression behavior of soft marine sediments. However, the quantitative assessment of such effects is not possible because of unavailability of the formula for the compression curve of marine sediments responsible for unit sensitivity. In this study, the relationship between the remolded state and the conventional critical state line is presented in the deviator stress versus mean effective stress plot. The analysis indicates that the remolded state is on the conventional critical state line obtained at a relatively small strain. Thus, a unique critical state sedimentation line for marine sediments of unit sensitivity is proposed. The comparison between the critical state sedimentation line proposed in this study and the existing normalized consolidation curves obtained from conventional oedometer tests on remolded soils or reconstituted soils explains well the
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Critical State Sedimentation Line of Soft Marine Clays |
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| CHANG Nien-yin.Critical State Sedimentation Line of Soft Marine Clays[J].China Ocean Engineering,2003,17(4):631-640. |
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| Authors: | CHANG Nien-yin |
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| Institution: | Institute of Geotechnical Engineering, Southeast University, Nanjing,210096, China Geotechnical Institute, Hohai University, Nanjing,210024, China Department of Civil Engineering, Center for Geotechnical Engineering Science, University of Colorado at Denver, Denver, CO 80217, USA |
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| Abstract: | The compression behavior responsible for unity sensitivity is very valuable in quantitative assessment of the effects of soil structure on the compression behavior of soft marine sediments. However, the quantitative assessment of such effects is not possible because of unavailability of the formula for the compression curve of marine sediments responsible for unit sensitivity. In this study, the relationship between the remolded state and the conventional critical state line is presented in the deviator stress versus mean effective stress plot. The analysis indicates that the remolded state is on the conventional critical state line obtained at a relatively small strain. Thus, a unique critical state sedimentation line for marine sediments of unit sensitivity is proposed. The comparison between the critical state sedimentation line proposed in this study and the existing normalized consolidation curves obtained from conventional oedometer tests on remolded soils or reconstituted soils explains well the effects of initial water content on the oedometer consolidation curves for remolded soils. |
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| Keywords: | conventional critical state line critical state sedimentation line initial water content liquid limit marine sediments ocean wave action remolded state |
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