The indicative properties of soil types A, B, and C were determined as follows: soil cil soil b 35% 20% 25% 27% 100% 2.63 49% 26% 35% 10% 45% 2.65 soil A 60% 28% 43% 40% 110% 2.7 Property Liquidity limit Plasticity limit Percentage of clay materials moisture content Degree of Shiism Specific weight

The indicative properties of soil types A, B, and C were determined as follows: soil cil soil b 35% 20% 25% 27% 100% 2.63 49% 26% 35% 10% 45% 2.65 soil A 60% 28% 43% 40% 110% 2.7 Property Liquidity limit Plasticity limit Percentage of clay materials moisture content Degree of Shiism Specific weight

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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Concept explainers

Soil classification and characteristics

Soil classification is a method of categorizing soil based on its properties, types, and uses. The motive of soil classification is to arrange various types of soils and divide them into groups for various engineering and agricultural purposes. Soil classification is carried out by various agencies as per their purposes. From an engineering perspective, soil classification is done to find out the suitability of soil for various construction purposes like the construction of dams, foundations, highways, infrastructures, and so on. For engineering purposes, the soil is classified by the following systems:

Question

solve 4-Its porosity is greater

5-Classify soil according to the plasticity diagram.

The indicative properties of soil types A, B, and C were determined as follows:
soil cil soil b
35%
60%
20%
28%
25%
43%
27%
40%
100% 110%
2.63
2.7
49%
26%
35%
10%
45%
2.65
soil A
Property
Liquidity limit
Plasticity limit
Percentage of clay
materials moisture content
Degree of Shiism
Specific weight
Either type
1 is more effective
2 Its edge density is greater
3 Greater overall density
4 Its porosity is greater
.5
Classify soil according to the plasticity diagram.

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The indicative properties of soil types A, B, and C were determined as follows: soil cil soil b 35% 20% 25% 27% 100% 2.63 49% 26% 35% 10% 45% 2.65 soil A 60% 28% 43% 40% 110% 2.7 Property Liquidity limit Plasticity limit Percentage of clay materials moisture content Degree of Shiism Specific weight Either type er 4 Its porosity is greater .5 Classify soil according to the plasticity diagram.
AASHTO soil Classification
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.
Question 3 The sieve analysis of soil and the liquid and plastic limits of the fraction passing through the No. 40 sieve are given below. Classify the soils using the AASHTO classification system and give the group indexes. % Passing No. 10: 48 % Passing No. 40: 28 % Passing No. 200: 6 LL = - %3D PL = NP Group classification: Blank 1 Group index: Blank 2
Question 5 The sieve analysis of soil and the liquid and plastic limits of the fraction passing through the No. 40 sieve are given below. Classify the soils using the AASHTO classification system and give the group indexes. % Passing No. 10: 98 % Passing No. 40: 80 % Passing No. 200: 50 LL = 38 %3D PL = 29 Group classification: Blank 1 Group index: Blank 2
The indicative properties of soil types A, B, and C were determined as follows: soil cil soil b 35% 60% 20% 28% 25% 43% 27% 40% 100% 110% 2.63 2.7 49% 26% 35% 10% 45% 2.65 soil A Property Liquidity limit Plasticity limit Percentage of clay materials moisture content Degree of Shiism Specific weight Either type 1 is more effective 2 Its edge density is greater 3 Greater overall density 4 Its porosity is greater .5 Classify soil according to the plasticity diagram.
Sieve Analysis- Percent Finer Plasticity Index Liquid Limit Soil No.10 No.40 No.200 92 68 30 42 18 90 48 31 5. 1. AASHTO CIlassification for oil A 2. Group Index for Soil A 3. Group Index for Soil B 22
Problem 2. The sieve analysis of ten soils and the liquid and plastic limits of the fraction pass- ing through the No. 40 sieve are given below. Classify the soils using the AASHTO classification system and give the group indexes. Soll No. 567699AWN. 4 8 10 No. 10 98 100 100 85 92 48 87 90 100 92 Sleve analysis (percent finer) No. 40 80 92 88 55 75 28 62 76 78 74 No. 200 50 80 65 45 62 6 30 34 8 32 Liquid limit 38 56 37 28 43 32 37 44 Plastic limit 29 23 22 20 28 NP 24 25 NP 35
3.11 Classify the following soils by using the Unified soil classification system. Give the group symbols and the group names. Sleve analysls- Percent finer Liquld Ilmit Plasticity Index Soll No. 4 No. 200 C, C. 1 70 30 33 21 48 20 41 22 95 70 52 28 4 100 82 30 19 100 74 35 21 6. 87 26 18 38 69 88 78 38 8. 99 57 54 26 9. 71 11 32 16 4.8 2.9 10 100 2 NP 7.2 2.2 11 89 65 44 21 12 90 39 31 3.9 2.1 Ans.: 1. SC (clayey sand with gravel), 2. GC (Clayey Gravel with sand), 3. CH (sandy fat clay), 4. CL (Lean clay with sand), 5. CL (Lean clay with sand), 6. SC (CIlayey sand), 7. CH (sandy fat clay), 8. CH (sandy fat clay), 9. SP-SC (Poorly Graded sand with gravel and sand), 10. sW (Well-graded sand), 11.CL (Sandy lean clay), 12. SP-SC (Poorly Graded sand with gravel and sand) 3.12 For an inorganic soil, the following grain-size analysis is given. U.S. Percent Sleve No. passing . 4 100 10 90 20 64 40 38 80 18 200 13 For this soil, LL = 23 and PL = 19. Classify the soil by using (a) AASHTO soil…
1. Classify the following soil to be used as a highway subgrade material using AASHTO method. Sieve Analysis % Finer No. 10 sieve = 88% No. 40 sieve = 75% No. 200 sieve = 34 % Plasticity for fraction passing No.4 Liquid Limit = 39% Plasticity Index = 12% %3D
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%. J
Determine D10, D30, D60, Cu and Cc of the following soils.