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 language | English |
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Pages (from-to) | 291-304 |
Number of pages | 14 |
Journal | Marine Georesources and Geotechnology |
Volume | 30 |
Issue number | 4 |
DOIs | |
Publication status | Published - 1 Oct 2012 |
Keywords
- creep
- HKMD
- sedimentation
- self-weight consolidation
- settling rate
ASJC Scopus subject areas
- Oceanography
- Geotechnical Engineering and Engineering Geology
- Ocean Engineering