The table below shows the results of consolidation test for a soil sample, Find the X value, if you know the value of initial height of sample equal to 19.15 mm Applied pressure, kPa AH, mm For each one loading stage Void ratio 0.712 25 0.25 50 0.22 X O 0.692 O 0.681 0.670 0.553 O no one

The table below shows the results of consolidation test for a soil sample, Find the X value, if you know the value of initial height of sample equal to 19.15 mm Applied pressure, kPa AH, mm For each one loading stage Void ratio 0.712 25 0.25 50 0.22 X O 0.692 O 0.681 0.670 0.553 O no one

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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5. A laboratory consolidation test was performed on a cohesive soil specimen with drainage on top and at the bottom. The original height of the specimen was 2.54 cm. Based on the log time versus deformation data, the time to achieve 50% average degree of consolidation was 11 min. Calculate the coefficient of consolidation (in cm²/min) for the soil sample.
(a) With the aid of sketches, explain Terzaghi's Spring Analogy Model. A typical one-dimensional consolidation test sample is 2 cm in height and 5 cm in diameter. Explain the possible reason why the diameter of the consolidation test specimen is much larger than the height. (b)
Geotechnical Engineering Please help me answer this question, and please show your solutions write it properly. Problem 3 A soil sample with a grain specific gravity of 2.67 was filled in a 1000mL container in the loosest possible state and the dry unit weight of the sample was found to be 14.75 N. It was then filled at the densest obtainable state and the weight was found to be 17.70 N. The void ratio of the soil in the natural state was 0.63. Determine the relative density in the natural state.
Consolidation test results are provided below, (Hint: C, or C = Ae / log(of/ai') ): 1.2 1.1 1- 0.9 Void ratio 0.8 0.7 0.6 0.5 0.4 1 10 100 1000 Vertical stress (kPa) (log scale) In some of the results an interval is provided. It ccan be possible to get a result between the given values Use the plot and find pre-consolidation pressure (past maximum vertical effective stress) pe' according to Casagrande's method. pe'= .kPa Seç. Find C, Seç. Find C.: Seç. If the tested soil sample is taken at a depth of 5m (ysat=18kN/m) where the groundwater table is located at the surface what is the Over Consolidation Ratio(OCR) (OCR= pclo vo) Seç. Initial height of the specimen is 22mm. What is the final height of the specimen when effective vertical stress is 650kPa? Hint: Use void ratio. Seç. (Result is in mm) What is the consolidation settlement of 2m thick clay layer if initial effective stress is 20kPa and final effective stress is 400kPa. Hint: Poc= Seç. [Ho/(1+einit)]x[C,log(p'/o'init) +…
Q1 Data obtained from a laboratory consolidation test are tabulated as follows: Test points I 2 3 4 5 o' (kPa) Total AH (mm) 20 50 100 0.23 0.87 L.90 3.62 5.55 7.25 200 400 800 G,=2.70, Ho= (initial thickness at zero pressure) = 22.5 mm, w = (moisture content at the beginning of the test) = 0.78. Plot the e-logo' curve and calculate Ce Ae I+eo Ho log a - logo, log(o /06) ΔΗ Hint: and
Consolidation test is conducted to QI determine the consolidation properties of the soil. Table 1. Test Result The dial gauge reading after each load increment (24 hours) is given in the table. Initial sample thickness, Ho = 20 mm, Initial void ratio, e, = 0.9. Determine the following: Construct the compressibility curve and predict the past maximum stress/pressure (preconsolidation stress/pressure) (kPa) Dial gauge reading after 24 Vertical stress (kPa) hours (mm) 22.50 %3D 40 22.41 80 22.15 160 21.51 320 20.25 640 18.45
In order to calculate void ratio of a soil sample, which laboratory test(s) need(s) to be conducted? a. Liquid limit test b. Drying in oven c. Pumping well test d. Pycnometer test e. Ground Penetrating Radar tests f. Hydrometer analysis
Two undrained triaxial tests were conducted on soil specimen, and they gave the following results: Sample Confining Pressure Deviator Stress A 350 kN/m² B 500 kN/m² 150 kN/m² 300 kN/m² The shear strength of sample A in the plane of it's normal stress is A 588 kPa B 283 kPa C 730 kPa D 165 kPa Correct Option
An undisturbed sample of fine sand is tested in the laboratory and found to have a dry mass of 4.63 kg, a total volume of 0.00198 m³ and a specific gravity of 2.70. Other laboratory tests are performed to determine the maximum and minimum density of the sand. At the maximum density, it is determined that the void ratio is 0.35 at the minimum density, the void ratio is 0.95. A. Compute the void ratio of the sand. B. Compute the relative density of the undisturbed sample. C. Compute the dry density in Mg/m³.
In Triaxial test, which of the following parameters do not need to be recorded the confining pressure specimen diameter changes ) the generated pore pressure the axial force A Triaxial test was performed on a dry, cohesionless soil. If the sample failed vhen the minor principal stress was half of the major principal stress, the soil's angle of internal friction is: O 22.5 19.5 33.3 O 25 A technician obtained a soil void ratio of 1.5. It is okay because it is possible to measure void ratio values above 1. True False |
Q# 2. The following are the results of a consolidation test on a sample of a clayey soil Pressure, o' (kN/m²) 1.116 25 1.108 50 1.055 100 0.962 200 0.845 400 0.755 800 0.65 1600 0.658 800 0.675 400 0.685 200 a Plot the e, log o' curve. b. Using Casagrande's method, determine the pretonsolidation pressure. Calculate the compression index, C, and the ratio of C/C. C. (Note: Use excel for calculation and drawing. Discuss the details in your own words.)
An oedometer test is conducted for a soil sample. The sample is consolidated under vertical stress of 50 kPa. The oedometer test finished at 144 min and data are given in table I. The average thickness of the sample is 20 mm. Predict the coefficient of consolidation (cv, in mm^2/min) using Casagrande log t method and Taylor square root of t method. Please use the empty graphical papers.