Experimental Study on Complete Consolidation Behavior of Hong Kong Marine Deposits

Fei Tong, Jianhua Yin, Huafu Pei

Research output: Journal article publicationJournal articleAcademic researchpeer-review

5 Citations (Scopus)

Abstract

The time-dependent feature of soft soils has gained intensive attraction in recent years. Due to the high water content and viscous property, the Hong Kong marine deposit (HKMD) frequently poses a challenge to geotechnical practice, particularly to the reclamation in Hong Kong. A key issue related to reclamation design, foundation construction and maintenance is excess settlement/deformation of the ground. Formation of HKMD typically goes through sedimentation and self-weight consolidation. A series of one-dimensional settling column consolidation tests, together with conventional oedometer tests were conducted on the HKMD. By normalizing parameter in settling stage, a unique global relationship of effective stress, σz′ and strain, ε{lunate}zcould be established. Results reveal that the settling curve and settling rate are significantly affected by the sediment concentration in self-weight consolidation. After the primary self-weight consolidation, the settling rate is reduced in the "secondary self-weight consolidation.".
Original languageEnglish
Pages (from-to)291-304
Number of pages14
JournalMarine Georesources and Geotechnology
Volume30
Issue number4
DOIs
Publication statusPublished - 1 Oct 2012

Keywords

  • creep
  • HKMD
  • sedimentation
  • self-weight consolidation
  • settling rate

ASJC Scopus subject areas

  • Oceanography
  • Geotechnical Engineering and Engineering Geology
  • Ocean Engineering

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