thick The average effective overburden pressure on 0 m homogeneous saturated clay layer is 150 kPa. Consolidation test on an undisturbed soil sample taken from the clay layer showed that the void ratio decreased from 0.6 to 0.5 by increasing the stress intensity from 100 kPa to 300 kPa (G = 2.65).

thick The average effective overburden pressure on 0 m homogeneous saturated clay layer is 150 kPa. Consolidation test on an undisturbed soil sample taken from the clay layer showed that the void ratio decreased from 0.6 to 0.5 by increasing the stress intensity from 100 kPa to 300 kPa (G = 2.65).

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter2: Geotechnical Properties Of Soil

Section: Chapter Questions

Problem 2.12P

See similar textbooks

Related questions

Q: 3- Following are the results of a laboratory consolidation test on a sample of undisturbed clay…

A: Draw the horizontal line from maximum curvature Draw tangent from the maximum curvature point…

Q: A saturated clay has a natural moisture content of 43%. Taking Gs = 2.70, calculate the void ratio,…

Q: Effective stress on soil C(A) Increases voids ratio and decreases permeability OCB) Increases both…

A: On increasing the void ratio the space between the particle decreases which reduces the void ratio.…

Q: A buried clay has the following condition: • The ground is very deep • The thickness of buried clay…

Q: A 400 cm³ volume of moist sand weighs 1020 gm. Its dry weight is 918 gm and specific gravity of…

Q: Determine the value of void ratio if porosity is 0.402 a:0.65 b:0.69 c:1 d:0.67 e:None of the above

Q: Pb-3 A 588 cm³ volume of moist sand weighs 1010 gm. Its dry weight is 918 gm and specific gravity of…

Q: Question attached

A: As math type not available, providing hand written solution

Q: While applying shear stress to a saturated clay sample, the specimen experiences volume change in…

A: Total pore water pressure may be conveniently considered to consist of the combined effect of four…

Q: In a laboratory compression test, the void ratio in a soil sample changes from 1.46 to 1.32 when the…

A: Given data: Initial void ratio of the soil sample (e1) = 1.46 final void ratio of the soil sample…

Q: What type of structure is most expected in a clay deposit that has formed in a naturally occurring…

A: Following is the difference between a flocculent structure and a dispersed structure in clay soils.

Q: 3 For the fluid-saturated Weber sandstone, the following materials constants are given: The bulk…

A: The given data is shown below: Ks=3.6×1010 PaCf=4.4×10-10 Pa-1ϕ=0.06μf=1.0×10-3 Pas

Q: A consolidated undrained triaxial test was performed on a normally consolidated clay with a critical…

A: for normally consolidated soil The cohesion is zerocu=0so,σ3=σc=50kpaσ1=σc+σ1=50+σd

Q: A clay sample has a void ratio of 0.50 in dry state and specific gravity of solids = 2.70. Its…

Q: . A stratum of sand and a stratum of clay have the same thickness of 3 m. The coefficient of 1 of…

Concept explainers

Calculation of Settlement

The vertical displacement of the structural foundation due to the loading from the superstructure is known as settlement. It is due to the reduction of air voids present in the soil. The amount of vertical displacement depends on the bearing capacity of the soil on which the foundation is laid. The effect of the settlement depends on the magnitude of settlement, uniformity, and the structural design of the structure. The maximum allowable settlement for residential and office buildings should be less than 18 mm, for industrial buildings, it is 38 mm and for commercial buildings, it is 25 mm.

Question

The initial void ratio of the clay layer is

thick
The average effective overburden pressure on 0 m
homogeneous saturated clay layer is 150 kPa.
Consolidation test on an undisturbed soil sample
taken from the clay layer showed that the void ratio
decreased from 0.6 to 0.5 by increasing the stress
intensity from 100 kPa to 300 kPa (G = 2.65).

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

The consolidation test of a clay sample taken from a 2 m thick normally consolidated clay soil layer has been conducted and the results are shown in the table below. The average overburden stress of the clay soil layer is 50 kPa, What would the total settlement (mm) be if an additional 100 kPa loading is applied over a large area on the top of the clay layer? (Hint: void ratio is related to the sample volume) P(kPa) 0 50 100 200 400 e 0.850 0.760 0.710 0.650 0.640
Consolidation problem
The water content of a sample of saturated soil at a mean effective stress of 10 kPa is 85%. The sample was isotropically consolidated with a mean effective stress of 150 kPa. At the end of the consolidation, the water content was 50%. The sample was then isotropically unloaded to a mean effective stress of 100 kPa, and the water content increased by 1%. Given: Gs = 2.7, o'cs = 25°. a) Calculate and K. 10 b) Determine the failure stresses (p'f and gf) under CU test and CD test for the conditions.
Hom
An oedometer test on a saturated clay soil gave the following results: Cc = 0.2 and Cs = 0.04. The in-situ vertical effective stress in the field is 130 kPa. A building foundation will increase the vertical stress in the center of the clay by 150 kPa. The thickness of the clay layer is 2 m and its water content is 28%. Calculate the primary consolidation settlement of the clay layer in the field if: a). OCR = 4.5; b). OCR = 1.5.
A given saturated clay is known to have effective strength parameters of c' = 10 kPa and = 28°. A sample of this clay was brought to failure quickly so that no dissipation of the pore water pressures %3D could occur. At failure it was known that o KPa, o = 10 KPa and = 20 kPa. %3D (a) Estimate the values of o, and oz at failure (b) Use the Mohr circle to illustrate the effective stress and total failure stress.
A CU triaxial test was carried out on a silty clay that was isotopically consolidated using a cell pressure of 125 kPa. The following data were obtained: Axial load (kPa) 0 5.5 11.0 24.5 28.5 35.0 50.5 85.0 105.0 120.8 Axial strain, E₁ (%) 0 0.05 0.12 0.29 0.38 0.56 1.08 2.43 4.02 9.15 Au (kPa) 0 4.0 8.6 19.1 29.3 34.8 41.0 49.7 55.8 59.0 (a) Plot the deviatoric stress vs. axial strain and excess porewater pressure vs. axial strain, respectively. (b) Determine the undrained shear strength (su). (Note: we assume that the sample reaches failure). (c) Determine the total principal stresses (0₁,03) and the effective principal stresses (0₁, 03') at the failure, respectively.
A 75 mm diameter clay specimen was consolidated in an oedometer under 200 kPa. At the end of consolidation, the void ratio is 0.863 and the specimen thickness is 18.51 mm. When the stress increment of 200 was added to the current vertical stress of 200 kPa, the specimen consolidated to a thickness of 17.56 mm. Assuming that the clay was normally consolidated under the vertical stress of 200 kPa, find the a) coefficient of volume compressibility in (MPa)^-1 and rounded to the 3rd decimal place.b) and the compression index of the clay rounded to the 2nd decimal place.
A consolidated undrained triaxial test was performed on a normally consolidated clay with a critical state friction angle of 230. After an initial isotropic consolidation at a cell pressure of 50 kPa, drainage was turned off, the cell pressure was increased to 85 kPa, and the sample was loaded to ultimate conditions. A pore pressure of 55 kPa was measured at ultimate state. What value of major principal total stress was measured at the ultimate state?
Question attached
Find the C, and the "apparent" OCR for a superficial clay stratum that is 4m thick. The water is at the surface. A sample of the clay has a water content of 27.9%, and a specific gravity of 2.65. An oedometer test showed the following results: Voids Ratio 0.736 0.733 0.73 0.675 0.638 0.6 Vertical Effective Stress 15 28 60 230 480 930
Below are results from three unconsolidated undrained triaxial tests performed on a fully saturated clay specimen: Test No. 1 2 Minor principal stress (psi) Major principal stress at failure (psi) 10 25 33 22 37 45 Moisture content = 21 % Determine: a) Void ratio (e) of the soil. You may use eS = wG_ (assume Gs = 2.70) %3D b) Deviatory stress at failure for each test trial c) Shear strength parameters (cu and ø). Hint: Sketch the Mohr's circles for the three trials. 3.