T Chart to Evaluate Consolidation Test Results
Tewatia SK, Venkatachalam K, Sridharan A
(Received 20 June 1996; accepted 23 February 1998)

Abstract
Using Terzaghi's degree of consolidation, U, and the time factor, T, relationship, if M_U1 and M_U2 (M_U1 ¹ M_U2) are slopes of the U-&square root;T curve at any two time factors T_U1 and T_U2, then it can be shown that a unique relationship exists between T_U2/T_U1, M_U1/M_U2, and T_U1 (or T_U2), and knowing any two of these, the third can be uniquely determined. A chart, called the T chart, has been plotted using these three variables for quickly determining T and U at any experimental time, t, to determine the coefficient of consolidation, c_u, corrected zero settlement, d₀, and ultimate primary settlement, d₁₀₀. The chart can be used even in those cases where settlement and time, at the instant of load increment, are not known.

Keywords:
clays, coefficients, consolidation, laboratory test, rate of settlement, slope

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Author Tewatia SK, Venkatachalam K, Sridharan A Title T Chart to Evaluate Consolidation Test Results Symposium , Committee on