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

页码：647 / 656

页数：9

共 8 条

[1]

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[2]

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[3]

Bo M.W., Arulrajah A., Choa V., Assessment of degree of consolidation in soil improvement project, Proceedings of the International Conference on Ground Improvement Techniques, pp. 71-80, (1997)

[4]

Bo M.W., Arulrajah A., Choa V., Chang M.F., Site characterization for land reclamation project at Changi in Singapore, Proceedings of the 1st International Conference on Site Characterization (Geotechnical Site Characterization), pp. 333-338, (1998)

[5]

Bo M.W., Arulrajah A., Choa V., The hydraulic conductivity of Singapore marine clay at Changi, Q J Eng Geol, 31, pp. 291-299, (1998)

[6]

Bo M.W., Chang M.F., Arulrajah A., Choa V., Undrained shear strength of the Singapore marine clay at Changi from in-situ tests, Geotech Eng, 31, 2, pp. 91-107, (2000)

[7]

Chu J., Bo M.W., Chang M.F., Choa V., Consolidation and permeability properties of Singapore marine clay, J Geotech Geoenviron Eng, 128, 9, pp. 724-732, (2002)

[8]

De Beer E.E., Goelen E., Heynew W.J., Joustra K., Cone penetration test (CPT): International reference test procedure, Proceedings of the 1st International Symposium on Penetration Testing, 2, pp. 737-744, (1988)

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