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 =

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 =

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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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.
Results from a liquid limit test conducted on a soil are given below. a. Determine the liquid limit of the soil. b. If it is known that the PI = 6.5, what would be the plastic limit of the soil? c. Determine the liquidity index of the soil if win situ = 23.8%
A falling head permeability test is conducted on silty soil. The sample diameter is 10.0 cm and its length or thickness is 6 cm. The diameter of the standpipe is 6.0 mm. The head at the start of the test is 58 cm. The test lasts 9 min and the head falls to 38 cm. Find the coefficient of permeability of this soil. The answer must be in 6 decimal places. Use units cm/sec.
Let 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 Brown
Following are the results from the liquid and plastic limit tests for a soil. Liquid limit test: Plastic limit test: PL = 18.7%a. Draw the flow curve and obtain the liquid limit.b. What is the plasticity index of the soil? c. Determine the liquidity index of the soil when the in situmoisture content is 26%
You are checking a field-compacted layer of soil. The laboratory control curve has the following values: gd (kN/m3) w (%) 16.34 14 16.57 16 16.65 18 16.50 20 16.26 22 15.87 24 The specification for compaction states that the field-compacted soil must be at least 95% of the maximum control density and within of the optimum moisture for the control curve. You dig a hole 1m3 in the compacted layer and extract a sample that weighs 17.2 kN wet and 14.1 kN dry. (a) What is the compacted gd? The compaction w? The percent compaction? Does the sample meet the specifications? (b) If the specific gravity is 2.68, what is the compacted degree of saturation? If the sample were saturated at constant density, what would be the water content?
A saturated soil sample, weighing 178 g has a volume of 96 cc. If the specific gravity of soil solids be 2.67, determine the void ratio in percent. a.95.5 b.18.89 c.48.85 d.35.8
Problem 1:The results of a standard Proctor test are given in the following table. Given: Mold volume = 1/30 ft^3 and Gs = 2.69. Determine the void ratio and the degree of saturation at the optimum moisture content. Trial # Weight of moist soil in the mold (lb) Moisture content (%) 1 3.7 8.6 2 4.15 10.6 3 4.69 12.5 4 4.62 14.9 5 4.02 16.7 6 3.63 18.3 Problem 2The laboratory test in Problem 1 is used to develop field compaction specification for a highway project. A field unit weight determination during the construction revealed that the in situ moist unit weight is 124 lb/ft3 and the moisture content is 13.7%. Determine the relative compaction in the field.
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 falling head permeability test is conducted on silty soil. The sample diameter is 10.0 cm and its length or thickness is 6 cm. The diameter of the standpipe is 6.0 mm. The head at the start of the test is 58 cm. The test lasts 9 min and the head falls to 38 cm. Find the coefficient of permeability of this soil. The answer must be in 6 decimal places. Use units cm/sec. Provide step by step solution.
A soil sample has a unit weight of 1.9 g/cc and w=12%. If Gs of solids is 2.65, determine the void ratio in percent. CHOICES: a.56.8 b.1.7 c.36 d.56
During Atterberg limit tests in the soil mechanics laboratory, the students obtained the following results from a clayey soil.Liquid limit tests: Plastic limit tests: Students conducted two trials and found that PL = 17.2% for the first trial and PL = 17.8% for the second trial.a. Draw the flow curve and obtain the liquid limit.b. What is the plasticity index of the soil? Use an average value of PL from the two plastic limit trails.