Gravitational Sedimentation Behavior of Sensitive Marine Ariake Clays |
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| Authors: | Zhenshun Hong Takehito Negami Hailun Guo |
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| Institution: |
a Institute of Geotechnical Engineering, Southeast University, Nanjing, P.R. China
b Saga University, Department of Civil Engineering, Saga, Japan
c Institute of Geotechnical Engineering, Southeast University, Nanjing, P. R. China |
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| Abstract: | It has been well documented that natural marine Ariake clays are sensitive clays. In this study, extensive data of marine Ariake clays are obtained to investigate the gravitational compression behavior for sensitive clays. Analysis results indicate that the compression behavior of remolded Ariake clays is not different from that of other remolded/reconstituted soils. But natural Ariake clays do not follow the gravitational compression pattern reported by Skempton (1970) for natural sedimentary soils. At a given value of effective overburden pressure, the void ratios of natural Ariake clays are almost independent of liquid limits. Most natural Ariake clays lie above the sedimentation compression line proposed by Burland (1990). When the liquid limit is larger than 90% and the ratio of natural water content over liquid limit ranges 0.8-1.1, the natural Ariake clays lie around the sedimentation compression line. In addition, the natural Ariake clay with higher value of the ratio of natural water content over liquid limit lies above the natural Ariake clay with lower value of the ratio of natural water content over liquid limit. Salt removal is the most probable cause for such a phenomenon. |
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| Keywords: | gravitation sedimentation compression liquid limit natural Ariake clays overburden pressure ratio of natural water content over liquid limit remolded Ariake clays sedimentation compression line |
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