   Chapter 11, Problem 11.4P Principles of Geotechnical Enginee...

9th Edition
Braja M. Das + 1 other
ISBN: 9781305970939

Solutions

Chapter
Section Principles of Geotechnical Enginee...

9th Edition
Braja M. Das + 1 other
ISBN: 9781305970939
Textbook Problem

The following are the results of a consolidation test on a sample of a clayey soil. a. Plot the e-log σ′ curve.b. Using Casagrande’s method, determine the preconsolidation pressure.c. Calculate the compression index, Cc and the ratio of Cs/Cc.

(a)

To determine

Plot the elogσ curve.

Explanation

Given information:

The results (pressure and void ratio) of consolidation test on a sample of a clayey soil are given in the Table.

Calculation:

Sketch the elogσ graph using the Table values

(b)

To determine

Calculate the preconsolidation pressure using Casagrande’s method.

(c)

To determine

Calculate the compression index CC

Calculate the ratio of swell index to compression index CSCC.

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