Secondary compression features of Jiangsu soft marine clay

Linchang Miao, Edward Kavazanjian

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

The results of one-dimensional compression tests conducted on undisturbed specimens of Jiangsu soft marine clay is presented. Because of its high in situ void ratios and natural water content, Jiangsu soft marine clay displays high values of both the virgin compression index, Cc, and the secondary compression coefficient, Cα. The laboratory data indicates that the value of the ratio Cα/Cc for Jiangsu soft marine clay is constant. However, neither Cα nor Cc are constant: they both depend upon the natural water content (or void ratio) and thus are also dependent on the deformation (or compression) of Jiangsu soft marine clay. Settlement analyses show that the secondary settlement of Jiangsu soft marine clay is a significant component of the field settlement. The concept of a constant value for Cα/Cc is used to predict the secondary settlement of a surcharged embankment founded upon Jiangsu soft marine clay. The predictions are in agreement with the limited post-construction field measurements of the embankment settlement.

Original languageEnglish (US)
Pages (from-to)129-144
Number of pages16
JournalMarine Georesources and Geotechnology
Volume25
Issue number2
DOIs
StatePublished - Apr 1 2007

Keywords

  • Consolidation
  • Creep
  • Secondary compression
  • Soft marine clay

ASJC Scopus subject areas

  • Oceanography
  • Geotechnical Engineering and Engineering Geology
  • Ocean Engineering

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