A 10 m thick clay layer with single drainage layer undergoes a settlement of 22 mm in 3 years. If the coefficient of consolidation of the layer is 0.2 mm?/s, then 40 mm consolidation will take -years. [Expressed to nearest integer value] an additional time of

A 10 m thick clay layer with single drainage layer undergoes a settlement of 22 mm in 3 years. If the coefficient of consolidation of the layer is 0.2 mm?/s, then 40 mm consolidation will take -years. [Expressed to nearest integer value] an additional time of

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter9: Consolidation

Section: Chapter Questions

Problem 9.17P

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Asphalt Binders and Mixtures

Asphalt binders are subsidiary products procured during the refining process of petroleum while manufacturing gasoline, diesel, and similar petroleum products. Asphalt binders are obtained from the residue that remains after the distillation of petroleum, this residue is further subjected to steam distillation and oxidation to remove the traces of gas oil present in the residue. Certain additives or modifiers are also added to asphalt binders to alter them to suit different applications.

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A 10 m thick clay layer with single drainage layer undergoes a settlement of 22 mm in 3 years.
If the coefficient of consolidation of the layer is 0.2 mm?/s, then 40 mm consolidation will take
-years. [Expressed to nearest integer value]
an additional time of

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A clay layer 5 m thick has double drainage. It was consolidated under a load of 127.5 kN/m2. The load is increased to 197.5 kN/m2. The coefficient of volume compressibility is 5.79 × 10^–4 m2/Kn and value of k = 1.6 × 10^–8 m/min. If the test sample is 2 cm thick and attains 100% consolidation in 24 hours, what is the time in days taken for 100% consolidation in the actual layer? Show diagram
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A certain clay layer has a thickness of 2 m. After one year when the clay layer was 50% consolidated a settlement of 20 mm occurred. For a similar clay layer, under similar loading and drainage conditions, how much settlement would occur at the end of four years, if the thickness of the new layer is 4 m?
A 3 m thick clay layer (single-drained) under surcharge loading underwent 60% primary consolidation in 30 days. Calculate the coefficient of consolidation for the clay. If the ultimate consolidation of 30 mm, calculate the settlement for 30 days.
In the soil profile shown below, if the water table changes from level WT0 to level WT1 permanently, what is the change in the ground surface elevation in mm in the long term after primary consolidation is completed? Assume that the clay layer is initially normally consolidated. Use a single clay layer in your calculations and positive value for settlement. (Acceptable tolerance = 4%)
Given the following data for the normally consolidated clay layer in the field. Compute the primary consolidation settlement. Thickness of clay layer= 3.0m Cc= 0.30 e= 0.70 Overburden pressure= 250 Kpa ΔP= 46 kPa Cα= 0.022
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