Question 4 (1 Listen The laboratory compaction tests requires several iterations of the test to be completed. Each iteration should have a soil sample that has a different moisture content M True False Question 5 min CA Listen When the soil sample is removed from the mold the determined. moisture content mass dry unit weight density must be

Question 4 (1 Listen The laboratory compaction tests requires several iterations of the test to be completed. Each iteration should have a soil sample that has a different moisture content M True False Question 5 min CA Listen When the soil sample is removed from the mold the determined. moisture content mass dry unit weight density must be

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 4.9P

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Answer ALL Questions Time: 2 Hours Q3: Classify the following soil by using the Unified soil classification system. Give the group symbols and the group names. Table 1. Sample 1 Grain Size Results (ASTM D422). Table 2. Atterberg Limits Results (ASTM D4318). Sleve No. Dia. (mm) % Passing Sample PL LL % in 12.7 100 G0 40 14 4.75 97 #10 2 94 #20 0.85 84 # 40 0.425 57 #60 0.25 32 140 0.106 15 #200 0.075 100 90 Atterberg Limit Results: LL = 60%, PL = 40% E 80 * 70- 60 - 50 40 30- a 20 10 1 30 a40 100 0.1200 10 80 0.01 Particle Diameter (mm) Answer ALL Questions Time: 2 Hours 70 CH or OH 60 A-line PI = 0.73(LL - 20) Or 50 40 30 CL MH OL 20 or CL-ML OH ML 10 - or OL 10 16 20 30 40 50 60 70 80 90 100 Liquid limit Figure 5.3 Plasticity chart Percent (%) Finer by Weight Plasticity index U-line PI = 0.(LL - 8) O Cengage Learning 2014
|Laboratory testing was performed on two soil samples (A and B). (a) Determine the USCS classification symbol for Sample A. (b) Determine the AASHTO classification for Sample B. Sieve No. Sieve Opening (mm) A- Percent Passing B - Percent Passing 3 inch 76.2 100 1.5 inch 38.1 98 0.75 inch 19.1 96 4 4.75 77 100 10 2.00 96 20 0.85 55 94 40 0.425 73 100 0.15 30 200 0.075 18 55 Liquid Limit 32 52 Plastic Limit 25 32 A Silty Clay (CL) sample was extruded from a 6-inch long tube with a diameter of 2.83 inches and weighed 1.71 lbs. (a) Calculate the wet density of the CL sample. (b) A small piece of the CL sample had a wet weight of 140.9 grams and a weight of 85.2 grams after drying. Compute the water content. (c) Compute the dry density of the CL sample A Standard Proctor test was performed on a soil with a specific gravity of 2.71. For the water content and wet soil unit weight in the following table: a) Plot the moisture-dry unit weight curve b) Find the maximum dry density and optimum…
"ll zain IQ قسم الهندسة المدنية - ميكانيك التربة - ... docs.google.com The sieve analysis has been 0/4 conducted on a soil sample and it was found that the percentage of passing from sieve number 200 is 100%. Also, the results of the liquid limit and plastic limits tests are shown in the image below. Using these information then the classification of this soil in accordance with the AASHTO system is Number of Mass of the Mass of the can + Mass of the can + blows can (g) wet soil (g) dry soil (g) 20 22.23 25.73 24.90 25 23.31 29.3 28.10 30 21.87 28.56 27.40 Number of Mass of the Mass of the can + Mass of the can + trials can (g) wet soil (g) dry soil (g) 1 23.00 28.00 27.50 2 23.00 28.20 27.70 3 23.00 27.50 27.00
For a soil specimen, given the following: % passing sieve #4-92 %, sieve #10 -81%, sieve # 40-78%, LL-48%, PL-16%, GI-18.2 classify the soil by AASHTO classification system. GI = (F200-35)[0.2 + 0.005 (LL - 40)] +0.01 (F20015)(PI – 10)
Refer to Problem 2.C.1. Results of the sieve analysis for Soils A, B, and C are given below. To obtain a more representative sample for further geotechnical testing, a ternary blend is created by uniformly mixing 8000 kg of each soil. Answer the following questions. a. If a sieve analysis is conducted on the mixture using the same set of sieves as shown above, compute the mass retained (as a percentage) and cumulative percent passing in each sieve. b. What would be the uniformity coefficient (Cu) and the coefficient of gradation (Cc) of the mixture?
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.
A sample soil is obtained and sieve analysis is performed to determined its particle distribution. Sieve Opening Mass Retained % Finer # 6 3.35 146 # 8 2.36 88 #16 1.18 125 # 40 0.425 56 #50 0.3 42 #140 0.106 127 # 200 0.075 126 Pan 29 Determine: 1. Effective Size (in mm and in 4 decimal places) 2. Uniformity Coefficient (in 2 decimal places) 3. Coefficient of Curvature (in 2 decimal places) 4. Sorting Coefficient (in 2 decimal places)
A sample soil for proposed building-the engineer in-charge decided to under go soil testing. A 480 cubic centimeter (cc) soil sample taken from the site weighs 850.5 grams. After oven drying, it weighed 594.4 grams. -If the specific gravity of solids is 2.72, what will be the result of the void ratio (e) of the soil? -What will be result in saturation (S)?
A sample soil for proposed building-the engineer in-charge decided to under go soil testing. A 480 cubic centimeter (cc) soil sample taken from the site weighs 850.5 grams. After oven drying, it weighed 594.4 grams. If the specific gravity of solids is 2.72, what will be the result of the void ratio (e) of the soil?
Based on the sieve analysis a soil has % finer for the following sieves: No. 10- 100% ; No. 40- 78% and No. 200- 82%. The liquid limit is 32 and Plasticity index is 12. Classify the soil by AASHT0 classification and give also the group index. a.A-6 (5) b.A-6 (9) c.A-7-5(8) d.A-7-6(8)
For a given sieve analyis: No. 4 - % finer 100%, for No. 200 -%finer 45. LL=36, PL= 22. Classify the soil using USCS. Justify your answer. CHOICES: a.SC b.GC c.SM d.SM
the following data have been obtained in a standard laboratory proctor compaction test : Trial No. moisture content. % 1 9 2 3 4 6 11.9 14.6 15-8 19.0 21.6 weight of container and compacted soil 137.43 38.16 38-67 38-8439-06 38.76 (N) The container is 943 cm³ ih volume and its weight is 201 A-Determine the optimum moisture content and the maximum dry unit weight B-what is the dry uhit weight and water content at 95% standard compaction in the field ?