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http://dx.doi.org/10.7843/kgs.2007.23.8.137

Required Time for Isotopic and Ko Consolidation of Marine Clay in Triaxial Cell  

Lee, Kyeong-Jun (Dong-A Geological Engrg. Co., KTD)
Jung, Du-Hwoe (Pukyong National Univ.)
Im, Jong-Chul (Pusan National Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.23, no.8, 2007 , pp. 137-147 More about this Journal
Abstract
Isotropic (instant loading) and Ko (gradual increase loading) consolidation tests were conducted in triaxial test equipment using cylindrical sample (5.0 cm in diameter and 10.0 cm in height) on two marine clay deposits. The duration of primary consolidation was estimated by two curve fitting methods using measured strain. A differential equation of consolidation for drainage in the radial and vertical direction was solved by the implicit finite difference scheme. The results of two curve fitting methods were compared with the numerical solutions to evaluate the appropriate axial loading rate of Ko consolidation and the primary consolidation periods. In addition, primary consolidation periods of the samples with a diameter of 35 mm and a height of 70 mm were calculated. The relation of radial and vertical consolidation coefficients is also presented.
Keywords
Axial loading rate; Curve fitting method; Implicit finite difference scheme;
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