Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Chapter 17, Problem 9P
To determine
(a)
Liquid limit of the soil using the plot of the flow curve
To determine
(b)
Plasticity index of the soil
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A liquid limit test on a clay was performed with the following results. The natural water content of the clay is 38% and plastic limit is 21%.
Number of Blows
6
12
20
28
32
Water content (%)
52.5
47.1
42.3
38.6
37.5
What is the plasticity index of this clay? (Use Interpolation)
Group of answer choices
15.74%
18.99%
18.85%
17.63%
Please answer this asap for upvote. thanks
05: The Figure below represents the data that was obtained from a liquid-limit test on
a soil. 50 percent of its particles is passing sieve #200. Two determinations for the
plastic limit gave water contents of 20.3 % and 20.8 %. Determine
1- Liquid Limit (LL).
2- Plasticity index.
3- Liquidity index if the water content is 27.4%
4- Void ratio at the liquid limit, if G, 2.7
5- Classify the soil based on AASHTO system.
30
10
20
40
60
80 100
Penetration, d (mm)
Moisture content, w ()
Following are the results from the liquid and plastic limit tests for a soil.
Liquid limit test:
let the N1 be 20 and w1 be 30%
let N2 be 30 and w2 be 20%
let N3 be 40 and w3 be 10%
For Plastic limit test:
let w1 be 12 and let w2 be 13 and let w3 be 13.5
The liquid limit =
Plastic limit =
Plasticity Index =
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- A liquid limit test on a clay was performed with the following results. The natural water content of the clay is 38% and plastic limit is 21%. Number of Blows 6 12 20 28 32 Water content (%) 52.5 47.1 42.3 38.6 37.5 What is the liquidity index of this clay? (Use Interpolation) Group of answer choices 0.895 0.96 1.08 0.90 Please answer this asap. For upvote. Thanksarrow_forwardA liquid limit test was performed on a soil sample. It was found out that the moisture content at 18 blows was 62%, and that at 40 blows was 30%. What will be the plasticity index of the soil if the plastic limit is = 28? Round off to two decimal places.arrow_forwardThe following results were obtained from a liquid limit test on a soil using a liquid limit device. The in-situ water content of this clay is 38% and the plastic limit is 20%. (Note: show the semi-log graph for the determination of the LL) Determine the following: (a) Liquid Limit of the soil, (b) Plasticity Index of the soil, and (c) Liquidity Index of the soil (d) shrinkage limit using the plasticity chartarrow_forward
- A liquid limit test on a clay was performed with the following results. The natural water content of the clay is 38% and plastic limit is 21%. Number of Blows 6 12 20 28 32 Water content (%) 52.5 47.1 42.3 38.6 37.5 What is the liquid limit of this clay? (Use Interpolation) Group of answer choices 39.85% 39.99% 36.74% 38.63% Please answer this asap for upvote. Thanksarrow_forwardDuring Atterberg limit tests in the soil mechanics laboratory, the students obtained the following results from a clayey soil. Liquid limit test: Number of blows, N Mosture content (%) 12 35.2 19 29.5 27 25.4 37 21 Draw the flow curve and obtain the liquid limit. • If plasticity index of the soil is 6.5 what is the plastic limit of this soil? • Determine the flow index. • Determine the liquidity index of the soil if the in-situ moisture content is 23.8%, and comment on the probable engineering behavior of this soil.arrow_forwardA sample of soil was tested in the laboratory, and the test results were listed as follows. Classify the soil by Unified Soil Classification System. 1. Liquid limit = 29%. 2. Plastic limit = 19%. 3. Mechanical grain-size analysis:arrow_forward
- a liquid limit test was performed on a soil sample. it was found out that the moisture content at 16 blows was 68% and that at 34 blows was 29%. what will be the plasticity index of the soil if the plastic limit is 28?arrow_forwardA liquid limits test carried out on a sample of inorganic soil taken from below the water table gave the following results: Determine the liquid limit, plastic limit and plasticity index of this soil.arrow_forwardThe same soil sample has a natural moisture content of 30% and was subject to the Atterberg Limits test. The plastic limit was measured as 27 while the liquid limit test shows the results in the table below. Number of Blows 42 26 10 Moisture Content 20 32 45 a. Determine the liquid limit of the soil sample. Show and briefly explain how you got the answer. b. Solve and describe the Plasticity Index of the soil sample. c. Determine value and soil state of the liquidity index of the soil sample. d. Determined and describe the clay activity of the soil sample.arrow_forward
- The laboratory tests on a soil sample yielded the following results: LL= 54%, PL= 25%, natural moisture content= 29%, the % finer than 0.002 = 18%. Determine the liquidity index of the soil. a.0.141 b.0.135 c.0.138 d.0.150arrow_forwardRefer to the soil in Problem 4.5. Using the Casagrande plasticity chart, graphically estimate the shrinkage limit of the soil as shown in Figure 4.22. 4.5 The following data were obtained by conducting liquid limit and plastic limit tests on a soil collected from the site. Liquid limit tests: Plastic limit test: PL = 19.3% a. Draw the flow curve and determine the liquid limit. b. Using the Casagrande plasticity chart (Figure 4.21), determine the soil type.arrow_forwardLet us assume that a soil sample taken in the field is taken and it must be identified by the SUCS Method and AASHTO Method. Moisture content = 5.75% Limit liquid = 53.5 Plastic limit = 31.6 Granulometry Sieve % Pass No. 4 100 # 40 68 # 200 54.3 Do you select the best answer? a) Inorganic silt and sand, with low plasticity b) Inorganic clay with low plasticity c) Clay silt, traces of gravel, dark Brownarrow_forward
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