Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN: 9781305635180
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 12, Problem 12.15P
To determine
Find the pressure meter modulus
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Example 4.3
The following compression readings were taken during an oedometer test on a saturated clay
specimen (G,=D2.73) when the applied pressure was increased from 214 to 429 kPa:
TABLE G
1
Time (min)
1
4
9.
16
25
4
Gauge (mm)
Time (min)
5.00
4.67
4.62
4.53
4.41
4.28
4.01
3.75
3.49
36
49
64
81
100
200
400
1440
Gauge (mm)
3.28
3.15
3.06
3.00
2.96
2.84
2.76
2.61
After 1440nmin, the thickness of the specimen was 13.60mm and the water content was 35.9%.
Determine the coefficient of consolidation from both the log time and the root time methods and the
values of the three compression ratios. Determine also the value of the coefficient of permeability.
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Geotechnical Engineering-2
Chapter 12 Solutions
Fundamentals of Geotechnical Engineering (MindTap Course List)
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- The following readings were obtained from an oedometer test on a specimen of saturated clay, see Table 1. The load being held constant for 24 hour before the addition of the next increment. Applied stress 25 50 100 200 400 800 (kN/m2) Thickness 19.60 19.25 18.98 18.61 18.14 17.68 17.24 (mm) Table 1 At the end of the last load period the load was removed and the sample allowed to expand for 24 hour, at the end of which time its thickness was 17.92 mm and its water content found to be 31.8%. The specific gravity of the soil was 2.66. i. Plot the e/o' curve and determine the coefficient of volume compressibility (m,) for an effective stress range of 220-360 kN/m? ii. Plot the e/log ơ' curve and from it determine the compressibility index (Cc) and the pre-consolidation pressure (Oʻpe) ii. Use the data obtained in (i), (ii) and (ii) to obtain and Plot a mlo' curve for the soil iv. compare the values for consolidation settlement for 4 m thick layer of the clay when the average effective…arrow_forwardshown in the figure. The coefficient of permeability of the Water is flowing through the permeability apparatus as coil is k m/s and the porosity of the soil sample is 0.50. 0.4 m Soll 0.8 m 0.4 m The total head, elevation head and pressure head in metres of water at the point R shown in the figure arearrow_forwardPlease do it in a complete way, so I can easily understand it. Thank you to all of youarrow_forward
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