Test Research on the Long-Term Consolidation Mechanism of Ultra-Soft Clay

Ai Min Liu; Shu Wang Yan; Jing Shuang Li

doi:10.4028/www.scientific.net/AMR.671-674.146

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 671-674Test Research on the Long-Term Consolidation...

Test Research on the Long-Term Consolidation Mechanism of Ultra-Soft Clay

Abstract:

Although the settlement of ultra-soft clay improved by the vacuum preloading technique was large in land reclamation projects, usually exceeding the theoretical calculation value by a large amount, the strength increase was relatively small. As a result the foundation would not meet the design requirements for strength. So a test was conducted to investigate the effect and mechanism of long-term consolidation of ultra-soft clay in laboratory in a period of over 691 days. A preloading load of 80kPa was used in this drainage consolidation test. The test result showed that for the ultra-soft clay with a high initial water content but a small strength, the settlement is large with a large strength increase, but the shear strength was relatively low. These results should draw much attention in application of vacuum preloading technique in construction projects.

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Periodical:

Advanced Materials Research (Volumes 671-674)

Pages:

146-150

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.671-674.146

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Online since:

March 2013

Authors:

Ai Min Liu, Shu Wang Yan, Jing Shuang Li

Keywords:

Consolidation Mechanism, Shear Strength, Test, Ultra-Soft Clay

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References

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