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Article
Laboratory evaluation of coefficient of radial consolidation based on pore-water-pressure dissipation and settlement
Faculty of Engineering - Papers (Archive)
  • Buddhima Indraratna, University of Wollongong
  • Kourosh Kianfar, University of Wollongong
  • Cholachat Rujikiatkamjorn, University of Wollongong
RIS ID
74134
Publication Date
1-1-2013
Publication Details

Indraratna, B., Kianfar, K. & Rujikiatkamjorn, C. (2013). Laboratory evaluation of coefficient of radial consolidation based on pore-water-pressure dissipation and settlement. Geotechnical Testing Journal, 36 (1), 1-12.

Abstract

Modified and standard Rowe consolidation cells were employed to investigate the behaviour of soft clays during vacuum assisted radial consolidation. Degree of consolidation (DOC) and the back calculated value of coefficient of radial consolidation ðchÞ based on measured settlement and excess pore-water-pressure ðuwÞ dissipation curves were compared. The DOC and ch based on pore water pressures are shown to be less than those based on settlements. The vacuum pressure-total surcharge ratio (VSR) is found to be an important parameter controlling the rate of the consolidation. Moreover, the coefficient of radial consolidation ðchÞ based on conventional oedometer testing could not accurately predict the consolidation behaviour of soft soils under varying VSR. Finally, a semi-empirical model incorporating the relationship between VSR and a modified coefficient of radial consolidation is introduced.

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Citation Information
Buddhima Indraratna, Kourosh Kianfar and Cholachat Rujikiatkamjorn. "Laboratory evaluation of coefficient of radial consolidation based on pore-water-pressure dissipation and settlement" (2013) p. 1 - 12
Available at: http://works.bepress.com/crujikiatkamjorn/105/