PRIN.OF GEOTECHNICAL...-MINDTAP(2 SEM)
9th Edition
ISBN: 9781305971271
Author: Das
Publisher: CENGAGE L
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Question
Chapter 4, Problem 4.3P
(a)
To determine
Find the flow index for the soil.
(b)
To determine
Find the liquidity index of the soil.
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Mechanical of soil
An undisturbed soil sample was prepared for a triaxial testing. The cylindrical soil sample is 50 mm in diameter and 100 mm long. It has a mass of 360 g. After finding the mass of the entire sample, a small portion was removed and a moisture content test was performed on it. The result of the moisture content test is shown in Table 3(a). Given the specific gravity, G, is 2.70.
(i) Compute the moisture content (%) of the soil sample.
(ii) By using the soil phase diagram, determine the bulk density (kg/m³), dry density (kg/m³), void ratio, porosity (%) and degree of saturation (%) of the soil sample.
A sample of field soil is tested in the laboratory. The results of Standard and Modified Proctor
tests at optimum moisture content are given in the Table below:
Standard Proctor test
Modified Proctor test
Mass of wet soil in the mold (g)
1800
2000
Volume of Proctor mold (cm2)
900
1000
Optimum moisture content (%)
12
10
At the field, a sample of 600 cm3 of this soil weighted 1200 g. The weight of water in this sample
was 200 g. Find the following:
1- Degree of compaction (Relative compaction) (R%) at Standard Proctor test.
2- Degree of compaction (Relative compaction) (R%) at Modified Proctor test.
Chapter 4 Solutions
PRIN.OF GEOTECHNICAL...-MINDTAP(2 SEM)
Ch. 4 - During Atterberg limit tests in the soil mechanics...Ch. 4 - Prob. 4.2PCh. 4 - Prob. 4.3PCh. 4 - Results from a liquid limit test conducted on a...Ch. 4 - The following data were obtained by conducting...Ch. 4 - Refer to the soil in Problem 4.5. Using the...Ch. 4 - Following results are obtained for a liquid limit...Ch. 4 - Prob. 4.8PCh. 4 - Prob. 4.9PCh. 4 - Prob. 4.10P
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Similar questions
- The 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_forwardA sample of field soil is tested in the laboratory. The results of Standard and Modified Proctor tests at optimum moisture content are given in the Table below: Standard Proctor test Modified Proctor test Mass of wet soil in the mold (g) 1800 2000 Volume of Proctor mold (cm?) 900 1000 Optimum moisture content (%) 12 10 At the field, a sample of 600 cm3 of this soil weighted 1200 g. The weight of water in this sample was 200 g. Find the following: 1- Degree of compaction (Relative compaction) (R%) at Standard Proctor test. 2- Degree of compaction (Relative compaction) (R%) at Modified Proctor test.arrow_forwardFollowing 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 =arrow_forward
- x=5 , y=6 , z=7arrow_forwardA 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. thanksarrow_forwardShow your solution, formula and givenarrow_forward
- Problem 5.arrow_forward2a. The following data was obtained from Liquid Limit Test conducted at a Soil Lab. Using the data given in Table 01, determine the following; Liquid Limit Determination Specimen No. No. of Blows Wt. of Container Wt. of Container + Wet Soil Wt. of Container + Dry Soil i. ii. Unit 1 14 (g) 7.17 (g) 27.97 (9) 21.37 2 20 7.37 27.37 21.27 3 28 7.77 28.47 22.37 4 32 10.97 30.17 24.67 I Determine the Liquid Limit and Flow Index If Plastic Limit of this soil is 22. Classify the soil based on BS Soil Classification system. 5 39 7.27 26.57 21.17arrow_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_forward
- Homework Help Please. Show All Work So I can Understand How to Do It Myself Please! Thank you!arrow_forwardI need homework help pleasearrow_forwardQuestion 8 (1) - Oedometer test What are the boundary conditions applied to a soil sample tested in an Oedometer? Z H a) Pore water pressure at z = H (top of the sample) is PH = Yw. H b) Ez = Ex c) &z=&v (₂ is the volumetric strain of the sample) d) At time t=0, 4p = 0arrow_forward
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