blows, N content (%) 14 38.4 16 36.5 20 33.1 28 27.0 Plastic limit tests: Students conducted two trials and found that PL= 17.2% for the 1st trial and PL = 17.8% for the second trial. Draw the flow curve and obtain the liquid limit. What is the plasticity index of the soil? (Hint: Use an average value of PL) Determine the flow index. Determine the liquidity index of the soil if the in-situ moisture content is 21%, and comment on the probable engineering behavior of this soil.

Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN:9781305970939
Author:Braja M. Das, Khaled Sobhan
Publisher:Braja M. Das, Khaled Sobhan
Chapter4: Plasticity And Structure Of Soil
Section: Chapter Questions
Problem 4.3P
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Problem 1:
During Atterberg limit tests in the soil mechanics laboratory, the students obtained the following results from a
clayey soil.
Liquid limit tests:
Number of
Moisture
blows, N
content (%)
14
38.4
16
36.5
20
33.1
28
27.0
Plastic limit tests:
Students conducted two trials and found that PL= 17.2% for the 1st trial and PL = 17.8% for the second trial.
Draw the flow curve and obtain the liquid limit.
What is the plasticity index of the soil? (Hint: Use an average value of PL)
Determine the flow index.
Determine the liquidity index of the soil if the in-situ moisture content is 21%, and comment on the
probable engineering behavior of this soil.
Transcribed Image Text:Problem 1: During Atterberg limit tests in the soil mechanics laboratory, the students obtained the following results from a clayey soil. Liquid limit tests: Number of Moisture blows, N content (%) 14 38.4 16 36.5 20 33.1 28 27.0 Plastic limit tests: Students conducted two trials and found that PL= 17.2% for the 1st trial and PL = 17.8% for the second trial. Draw the flow curve and obtain the liquid limit. What is the plasticity index of the soil? (Hint: Use an average value of PL) Determine the flow index. Determine the liquidity index of the soil if the in-situ moisture content is 21%, and comment on the probable engineering behavior of this soil.
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