Homework Chapter 3 3 1 Results from liquid and plastic limit tests conducted on soil are given below. No. of blows, N Moisture content (%) 14 38.4 16 36.5 20 33.1 28 27.0 If the plastic limit is PL = 13.4% a. Draw the flow curve and obtain the liquid limit. b. What is the plasticity index of the soil? Ans.: L.L = 29%, P.L = 15.6 3.2 Determine the liquidity index of the soil in Problem (1) if win situ = 32%. Ans.: L.I = 1.19% 3.3 Results from liquid and plastic limit tests conducted on soil are given below. No. of blows, N Moisture content (%) 13 18 27 22 If the plastic limit is PL = 19.1% a. Draw the flow curve and obtain the liquid limit. b. What is the plasticity index of the soil? Ans.: L.L = 23.6%, P.L = 4.5% 219% nted ALObaidi

Principles of Geotechnical Engineering (MindTap Course List)
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Author:Braja M. Das, Khaled Sobhan
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Chapter11: Compressibility Of Soil
Section: Chapter Questions
Problem 11.14P
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Homework Chapter 3
31 Results from liquid and plastic limit tests conducted on soil are given
below.
No. of blows, N
Moisture content (%)
14
38.4
16
36.5
20
33.1
28
27.0
If the plastic limit is PL = 13.4%
a. Draw the flow curve and obtain the liquid limit.
b. What is the plasticity index of the soil?
Ans.: L.L = 29%, P.L = 15.6
3.2 Determine the liquidity index of the soil in Problem (1) if wWin situ = 32%.
Ans.: L.I = 1.19%
3.3 Results from liquid and plastic limit tests conducted on soil are given
below.
No. of blows, N
Moisture content (%)
13
18
27
22
If the plastic limit is PL = 19.1%
a. Draw the flow curve and obtain the liquid limit.
b. What is the plasticity index of the soil?
Ans.: L.L = 23.6%, P.L = 4.5%
3.4 Determine the liquidity index of the soil in Problem (3) if win situ = 21%
Ans.: L.I = 0.422%
3.5 A saturated soil used to determine the shrinkage limit has initial volume Vi
= 20.2 cm3, final volume Vf = 14.3 cm3, the mass of wet soil M1 = 34 g, and
mass of dry soil M2 = 24 g. Determine the shrinkage limit and the shrinkage
ratio. Ans.: S.L = 17.08%, S.R = 1.68%
Civil Eng. Dept. – College of Eng.
Assistant Prof. Dr. Ahmed Al-Obaidi
Soil Mechanics
(70)
nted ALObaidi
Transcribed Image Text:Homework Chapter 3 31 Results from liquid and plastic limit tests conducted on soil are given below. No. of blows, N Moisture content (%) 14 38.4 16 36.5 20 33.1 28 27.0 If the plastic limit is PL = 13.4% a. Draw the flow curve and obtain the liquid limit. b. What is the plasticity index of the soil? Ans.: L.L = 29%, P.L = 15.6 3.2 Determine the liquidity index of the soil in Problem (1) if wWin situ = 32%. Ans.: L.I = 1.19% 3.3 Results from liquid and plastic limit tests conducted on soil are given below. No. of blows, N Moisture content (%) 13 18 27 22 If the plastic limit is PL = 19.1% a. Draw the flow curve and obtain the liquid limit. b. What is the plasticity index of the soil? Ans.: L.L = 23.6%, P.L = 4.5% 3.4 Determine the liquidity index of the soil in Problem (3) if win situ = 21% Ans.: L.I = 0.422% 3.5 A saturated soil used to determine the shrinkage limit has initial volume Vi = 20.2 cm3, final volume Vf = 14.3 cm3, the mass of wet soil M1 = 34 g, and mass of dry soil M2 = 24 g. Determine the shrinkage limit and the shrinkage ratio. Ans.: S.L = 17.08%, S.R = 1.68% Civil Eng. Dept. – College of Eng. Assistant Prof. Dr. Ahmed Al-Obaidi Soil Mechanics (70) nted ALObaidi
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