Principles of Geotechnical Engineering (MindTap Course List)
Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN: 9781305970939
Author: Braja M. Das, Khaled Sobhan
Publisher: Cengage Learning
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Chapter 11, Problem 11.5P

(a)

To determine

Plot the elogσ curve.

(b)

To determine

Calculate the preconsolidation pressure.

(c)

To determine

Calculate the compression index.

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Organic soils are typically characterized by high void ratio, low specific gravity, and high compressibility. Following are the results of a consolidation test on a sample of organic soil obtained from southwest Florida. Pressure, o' (kN/m²) Change In dlal reading, AH (mm) 0.284 0.150 12 24 0.315 48 0.564 100 0.823 200 2.25 400 5.34 Given that the initial height of the specimen= 20.6 mm, mass of dry specimen = 12 g, area of specimen = 31.67 cm², and Gs = 2.49, d. Plot the e-log o' curve. Determine the pre-consolidation Calculate the compression index, Cc. е. pressure. f.
11.4 Organic soils are typically characterized by high void ratio, low specific gravity, and high compressibility. Following are the results of a consolidation test on a sample of organic soil obtained from southwest Florida. Pressure, o' (kN/m²) Change in dial reading, AH (mm) 0.284 12 0.150 24 0.315 48 0.564 100 0.823 200 2.25 400 5.34 Given that the initial height of the specimen 12 g, area of specimen a. Plot the e-log ơ' curve. b. Determine the preconsolidation pressure. c. Calculate the compression index, C.. = 20.6 mm, mass of dry specimen = 2.49, = 31.67 cm?, and G, © Cengage Learning 2014
Organic soils are typically characterized by high void ratio, low specific gravity, and high compressibility. Following are the results of a consolidation test on a sample of organic soil obtained from southwest Florida. Pressure, o' (kN/m) Change in dial reading, AH (mm) 0.242 12 0.201 24 0.317 48 0.552 100 0782 200 2.193 400 4.429 Given that the initial height of the specimen = 20.6 mm, mass of dry specimen 12 g, area of specimen = 31.67 cm², and G, = 2.49, a. Plot the e-log o' curve. b. Determine the preconsolidation pressure. c. Calculate the compression index, C Congage Learning 2014
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