A soil sample was consolidated under a cell pressure of 8 kg/cm², pore water pressure of 4.5 kg/cm². With no drainage permitted the cell pressure was raised to 10 kg/cm² results in increased pore water pressure to 5.75 kg/cm². The axial load was then increased to give a deviator stress of 6.25 kg/cm² (with the cell pressure at 10 kg/cm2), pore pressure is now noted. to be 7.15 kg/cm². The ratio of pore pressure coefficients B to A is

A soil sample was consolidated under a cell pressure of 8 kg/cm², pore water pressure of 4.5 kg/cm². With no drainage permitted the cell pressure was raised to 10 kg/cm² results in increased pore water pressure to 5.75 kg/cm². The axial load was then increased to give a deviator stress of 6.25 kg/cm² (with the cell pressure at 10 kg/cm2), pore pressure is now noted. to be 7.15 kg/cm². The ratio of pore pressure coefficients B to A is

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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Question

A soil sample was consolidated under a
cell pressure of 8 kg/cm², pore water
pressure of 4.5 kg/cm². With no
drainage permitted the cell pressure
was raised to 10 kg/cm² results in
increased pore water pressure to 5.75
kg/cm². The axial load was then
increased to give a deviator stress of
6.25 kg/cm² (with the cell pressure at
10 kg/cm2), pore pressure is now noted
to be 7.15 kg/cm². The ratio of pore
pressure coefficients B to A is

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Sample of clay isotropically normally compressed to an all round effective pressure of 100 kPa and then allowed to swell back to an effective isotropic pressure of 50 kPa. The sample is then subjected to a standard drained compression test. What is the deviator stress at failure and what is the volumetric strain experienced by the sample at failure? The second sample is subjected to a standard undrained compression test. What are the deviator stress and pore pressure at failure, if there is initially back pressure of 50kPa? Assume that the soil has the following critical state properties: M = 0.95, λ = 0.093, K = 0.035, I = 2.06 and N= 2.118
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