% Finer• Particle size analyses were carried out on two soils-Soil A and Soil B-and the particle sizedistribution curves are shown in Figure10090807060504030Clay201000.001+Silt0.01Soil ASandSoil B0.11Particle size (mm) - log scaleGravel10SoilALL26 (oven-dried; assume samefor not dried)B Nonplastic1. Which of the two soils, in your opinion, is a better material for the core of a rolled earth dam?PL18

Given Soil A - silt and clay and sand content. Soil B- clay content is missing and soil is non…

• Particle size analyses were carried out on two soils-Soil A and Soil B-and the particle size distribution curves are shown in Figure % Finer Clay 100 90 80 70 60 50 40 30 20 10 0 0.001 Silt Soil A Sand Soil B 0.01 0.1 1 Particle size (mm) - log scale Gravel 10 Soil A B LL 26 (oven-dried; assume same for not dried) Nonplastic 1. Which of the two soils, in your opinion, is a better material for the core of a rolled earth dam? PL 18

• Particle size analyses were carried out on two soils-Soil A and Soil B-and the particle size distribution curves are shown in Figure % Finer Clay 100 90 80 70 60 50 40 30 20 10 0 0.001 Silt Soil A Sand Soil B 0.01 0.1 1 Particle size (mm) - log scale Gravel 10 Soil A B LL 26 (oven-dried; assume same for not dried) Nonplastic 1. Which of the two soils, in your opinion, is a better material for the core of a rolled earth dam? PL 18

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 4.6P: Refer to the soil in Problem 4.5. Using the Casagrande plasticity chart, graphically estimate the...

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Q': A- Classification tests have been performed on a soil sample and the grading curve that shown in (Fig. 1) and Atterberg limits obtained. Classify the soil using the USCS? L.L=32 and P.L=26 100 80 60 40 20 Fig. 1 0.1 1 Particle size (mm) 0.0001 0.001 0.01 10 100 % Finer
Refer 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.
Q3- A sieve analysis on soil sample showed the following results; |Size, mm | 12 4.75 2.00 0.84 0.42 0.25 0.15 0.075 0.001 % finer 100 63 37 49 | 31 25 14 10 | 4 Plot the gradation curve and determine the weight of the gravel, sand, silt and clay if the total weight of the investigated soil mass is (1.3xN) kN. Show the plot and all calculation clearly. (N = 16 )
Sr B. ( A Soil Specimen has the following characteristics: % passing No.4 sieve = 85 % passing No.200 sieve = 11 D60 = 2 mm D30=0.35 mm D₁0 = 70 μm D8=2 μm L.L = 36% P.L = 31% 1. Classify the specimen according to the Unified Soil Classification System (USCS). Assign the group name and the group symbol. 2. Determine the soil activity. 3. Determine the soil Liquidity index and consistency index if wc = 26%.
As a result of sieve analysis and hydrometer analysis on a soil sample, gravel 40% and sand 18%. Liquid limit value of the soil 58% and plasticity index was determined as 32%. D60, D30 and D10 values according to grain distribution curve 2.4mm, 0.9mm and 0.2mm respectively. According to the findings obtained, the soil sample Make USCS classification.
U B. ( A Soil Specimen has the following characteristics: % passing No.4 sieve = 85 % passing No.200 sieve = 11 D60 = 2 mm D30 = 0.35 mm D₁0 = 70 μm L.L = 36% P.L = 31% D8 = 2 µm 1. Classify the specimen according to the Unified Soil Classification System (USCS). Assign the group name and the group symbol. 2. Determine the soil activity. 3. Determine the soil Liquidity index and consistency index if we = 26%.
The particle size analyses for four clay soils particles conducted ingeotechnic laboratory are shown in Table Q1(a)(i) and Table Q1(a)(ii).Using to the American Society for Testing and Materials (ASTM) methodanalysis; (i) With the plot of graph, find the value of Cu and Cz for all types ofsoil (i) With the plot of graph, find the value of Cu and Cz for all types ofsoil
Data for Problems 5.12-5.15 You have collected soil samples as part of the investigation for a dam project. The grain-size distribution data for the four soil samples are shown in Figure 5.8 as curves H, I, J and L From your Atterberg limit tests on the -40 portion of theses samples, you have measured the following data. Percentage finer by weight 100% 80% 60% 40% 20% 0% 0.001 FINES H I J 34 L 18 Use these data to answer Problems 5.12 through 5.15. 0.010 Soil Sample Identification H #200 Liquid Limit Fine 60 46 37 Non-Plastic SAND Plastic Limit 0.100 Particle size (mm) 26 Medium Coarse 1.000 #4 GRAVEL Fine 10.000 Coarse 3° T 100.000 Figure 5.8 Particle size distribution curves for Problems 5.12 through 5.15. 5.13. Determine the AASHTO group classification and group index for soils H through L using the data given above. 5.15. Determine the USCS group symbol and group name for soils H through L using the data given above.
5.5 The modified Proctor test (ASTM D 698, method C) was performed for a soil with G, = 2.70, and the results are as follows: Moist Weight in Mold, gf Water Content, % 6.5 3250 9.3 3826 12.6 4293 14.9 4362 17.2 4035 18.6 3685 (d) What is y at wopi? (e) What is the range of water content if the relative compaction (R.C.) is required to be 95% of the modified Proctor Ya.max?
From your Atterberg limits tests on the -40 portion of these samples, you have obtained the following data Percentage finer by weight 100% 80% 60% 40% 20% 0% Soil Sample Identification 0.001 H I J L FINES Liquid Limit 60 H 0.010 46 37 Plastic Limit 26 nonplastic #200 34 18 Fine HOT SAND Medium 0.100 Particle size (mm) 1.000 GRAVEL Course Fine Coarse #4 10.000 Classify the soils H, I, J and L using 1) USCS Classification 2) AASHTO Classification 3" 100.000 I LLII. I
The results of the particle-size analysis of the soil are as follows: Percent passing No. 10 sieve = 100; Percent passing No. 40 sieve = 80; Percent passing No. 10 sieve = 58.The LL and PI of minus No. 40 fraction of the soil are 30 and 10 respectively. Classify the soil by USCS system a. CH b. SP-SC c. CL-ML d. CL-ML
5.5 The modified Proctor test (ASTM D 698, method C) was performed for a soil with G, = 2.70, and the results are as follows: Moist Weight in Mold, gf Water Content, % 6.5 3250 9.3 3826 12.6 4293 14.9 4362 17.2 4035 18.6 3685 (a) Plot the Ya versus w relation. (b) Determine Ya,max and wopt- (c) Calculate S and e at the maximum dry unit weight point. (d) What is Y, at Wopt? What is the range of water content if the relative compaction (R.C.) is required to be 95% of the modified Proctor Ya.max?