Dissipation testing of Singapore marine clay by piezocone tests

被引：10
|
作者：
Arulrajah A. [1 ]
Bo M.W. [2 ]
Nikraz H. [3 ]
Balasubramaniam A.S. [4 ]
机构：
[1] Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Melbourne, VIC 3122
[2] DST Consulting Engineers Inc, Gloucester, ON
[3] Department of Civil Engineering, Curtin University of Technology, Perth, WA 6102
[4] School of Engineering, Griffith University, Gold Coast, QLD 4215
来源：
Geotechnical and Geological Engineering | 2007年 / 25卷 / 06期
关键词：
Dissipation; In situ; Marine clay; Piezocone; Pore pressure;
D O I：
10.1007/s10706-007-9137-4
中图分类号：
学科分类号：
摘要：
In situ dissipation tests provide a means of evaluating the in situ coefficient of consolidation due to horizontal flow and hydraulic conductivity in horizontal direction in marine clays formation. Dissipation tests by means of piezocone were utilised in the characterisation of the coefficient of consolidation due to horizontal flow and the hydraulic conductivity in horizontal direction of Singapore marine clay at Changi. Piezocone dissipation tests were carried out prior to reclamation as well as after ground improvement with vertical drains to compare the changes in the coefficient of consolidation due to horizontal flow and hydraulic conductivity in horizontal direction prior to and after ground improvement. The quasi-static piezometric pressures from the dissipation tests were compared with piezometric pressures from piezometers to determine their possibility of future use as an alternative to piezometers. Post-improvement CPTU dissipation tests were carried out in the treated "Vertical Drain Area" as well as in an adjacent untreated "Control Area" for comparison purposes. This study provides support for the use of piezocone dissipation testing methods for the determination of the coefficient of consolidation due to horizontal flow and hydraulic conductivity in horizontal direction of marine clays in the region as well as an alternative to piezometer instrumentation for monitoring of piezometric pressure during consolidation. © Springer Science+Business Media B.V. 2007.
引用
收藏
页码：647 / 656
页数：9
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