Analysis of Consolidation Data by a Non-Graphical Matching Method
Robinson RG, Allam MM
(Received 28 April 1997; accepted 5 January 1998)

Abstract
Conventionally the laboratory time-compression data from an odometer test are analyzed by graphical methods. This involves the determination of initial compression, d_i, total primary consolidation, d₁₀₀, and coefficient of consolidation, C_u. The advent of computer-controlled data-logging systems calls for adoption of non-graphical techniques for analysis of consolidation test data. In this Technical Note a non-graphical matching method is proposed for analyzing the time-compression data. The values of d_i, d₁₀₀, and C_u can be obtained by direct matching with the theory. The computed time-compression curve for this C_u value matches very well with the experimental data in the primary consolidation phase. The proposed method is also applicable to consolidation under conditions of radial drainage. The method will be very useful if the data are collected through computer-driven data-logging systems.

Keywords:
coefficient of consolidation, compressibility, graphical methods, matching method, vertical and radial drainage

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