   Chapter 4, Problem 4.7P 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

Following results are obtained for a liquid limit test using a fall cone device. Estimate the liquid limit of the soil and the flow index. To determine

Find the liquid limit and flow index of the soil.

Explanation

Draw the graph between the cone penetration and the moisture content as in Figure 1.

Refer Figure 1.

The liquid limit obtained from the fall cone test is 33.8 %.

Therefore, the liquid limit of the soil (LL) is 33.8%_.

Determine the flow index for the soil (IF) using the relation.

IFC=w2(%)w1(%)logd2logd1

Here, w2 is the moisture content of soil at cone penetration of d2 and w2 is the moisture content of soil at cone penetration of d2

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