The following readings were obtained from an oedometer test on a specimen ofsaturated clay, see Table 1. The load being held constant for 24 hour before theaddition of the next increment.Applied stress2550100200400800(kN/m2)Thickness19.60 19.25 18.98 18.61 18.14 17.68 17.24(mm)Table 1At the end of the last load period the load was removed and the sample allowed toexpand for 24 hour, at the end of which time its thickness was 17.92 mm and itswater 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 volumecompressibility (m,) for an effective stress range of 220-360kN/m?ii.Plot the e/log ơ' curve and from it determine thecompressibility index (Cc) and the pre-consolidation pressure(Oʻpe)ii.Use the data obtained in (i), (ii) and (ii) to obtain andPlot a mlo' curve for the soiliv.compare the values for consolidation settlement for 4 m thicklayer of the clay when the average effective stress changesfrom 220-360 kN/m2

Here, Sr=1 as the specimen is of saturated clay The given data is: w=31.8%=0.318 G=2.66 Using the…

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

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

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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Concept explainers

Test for Determination of Shear Strength

The term shear strength is often associated with the soil. Shear strength is defined as the resistance to the deformation of soil particles due to the continuous action of shear stress. In short, shear strength is the maximum shear stress that a soil can sustain.

Question

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 stress changes
from 220-360 kN/m2

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