A normally consolidated clay has the following values.Void ratio, ek (cm/sec)1.50.2 × 10-61.90.91 × 10–6Estimate the magnitude k of the clay at a void ratio (e) of 0.9. Useenk = C1+e(Enter your answer to three significant figures.)k =cm/sec

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Answered: A normally consolidated clay has the…

Principles of Foundation Engineering (MindTap Course List)

8th Edition

ISBN:9781305081550

Author:Braja M. Das

Publisher:Braja M. Das

Chapter2: Geotechnical Properties Of Soil

Section: Chapter Questions

Problem 2.9P

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2.9 A normally consolidated clay has the following values. Void ratio, e k (cm/sec) 0.2 × 10 0.91 x 10-6 1.2 1.9 Estimate the magnitude of k of the clay at a void ratio (e) of 0,9. Use Eq. (2,41).
7.14 For a normally consolidated clay, the following values are given: Void ratio, e k (cm/sec) 0.95 0.2 x 10-6 0.91 x 10-6 1.6 Estimate k at a void ratio of 1.1. Use Eq. (7.38). Ⓒ Cengage Learning 2014
A normally consolidated clay has the following values void ratio e = 1.2, k(cm/sec) = 0.2 x 10^-6 And void ratio e = 1.9, 0.91x10^-6. Estimate the magnitude k of the clay at a void ratio (e) of 0.9. Use k = C (e^n)/1+e.
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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.
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1. The pressure versus void ratio data determined from a consolidation test on an undisturbed clay specimen are as follows: Applied Pressure (kPa) 20 40 80 160 320 640 1280 320 80 20 0 Void Ratio 0.953 0.948 0.938 0.920 0.878 0.789 0.691 0.719 0.754 0.791 0.890 (a) Plot this pressure versus void ratio data on a semi-logarithmic graph. (b) Determine the equations for the virgin compression curve and for the rebound curve for unloading starting at 1,280 kPa. (c) What are the corresponding compression and recompression indices for this soil? (d) Estimate the stress to which this clay has been preconsolidated. (After A. Casagrande.)
In a normally consolidated clay specimen, the following data are given from the laboratory consolidation test. e₁ = 1.10 σ= 65.0 kN/m² €₂ = 0.85 o₂ = 240.0 kN/m² a. Find the compression index C. b. What will be the void ratio when the next pressure incre- ment raises the pressure to 460.0 kN/m²?

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A normally consolidated clay has the following values. Void ratio, e k (cm/sec) 1.5 0.2 × 10-6 1.9 0.91 × 10–6 Estimate the magnitude k of the clay at a void ratio (e) of 0.9. Use en k = C 1+e (Enter your answer to three significant figures.) k = cm/sec