A 3 m saturated clay layer is covered by 1 m-thick sand and is underlain by sand as well. The water table is 0.5 m below the ground level, and for vertical stress computations, all layers may be assumed to have unit weights of 18 kN/m³. An oedometer test was performed on an undisturbed clay sample obtained from a depth 1.9 m below the ground level. The initial water content of the clay was 35.7% and the specific gravity of the soil grains was 2.65. The sample thicknesses after 24 hours at each load increment in the consolidation test are summarized: 50 100 18.44 18.03 o'v (kPa) H (mm) 19.05 a. Plot e and my against o'v (log). b. Calculate both the compression index and the recompression index of the clay. c. Is the clay normally consolidated or overconsolidated at the depth where the sample was taken from? Why? 200 17.63 400 17.21 50 17.33

A 3 m saturated clay layer is covered by 1 m-thick sand and is underlain by sand as well. The water table is 0.5 m below the ground level, and for vertical stress computations, all layers may be assumed to have unit weights of 18 kN/m³. An oedometer test was performed on an undisturbed clay sample obtained from a depth 1.9 m below the ground level. The initial water content of the clay was 35.7% and the specific gravity of the soil grains was 2.65. The sample thicknesses after 24 hours at each load increment in the consolidation test are summarized: 50 100 18.44 18.03 o'v (kPa) H (mm) 19.05 a. Plot e and my against o'v (log). b. Calculate both the compression index and the recompression index of the clay. c. Is the clay normally consolidated or overconsolidated at the depth where the sample was taken from? Why? 200 17.63 400 17.21 50 17.33

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter10: Shear Strength Of Soil

Section: Chapter Questions

Problem 10.20P

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