Question

The equation given by Carillo in 1942 relating the degree of consolidation in one dimensional flow (Uz) and radial flow (Ur) is _______

(a) (1-U)=(1-Uz)(1+Ur)

(b) (1-U)=(1-Uz)(1-Ur)

(c) (1-U)=(1+Uz)(1-Ur)

(d) (1-U)=(1+Uz)(1+Ur)

This question was addressed to me in class test.

I need to ask this question from Consolidation Equation in Polar Coordinates in section One Dimensional Consolidation of Geotechnical Engineering I

Answer 1

Correct answer is (b) (1-U)=(1-Uz)(1-Ur)

The explanation: The equation given by Carillo in 1942 relating the degree of consolidation in one dimensional flow (Uz) and radial flow (Ur) is,

(1-U)=(1-Uz)(1-Ur). This is the combination of the one dimensional flow and radial flow parts from the governing consolidation equation.