Check whether the clay is normally consolidated or overconsolidated.

Question

Refer to the soil profile shown in figure below. A laboratory consolidation test on the clay gave the results: o'c = 100 kPa Cc = 0.4 Cs = 0.2Cc If the average effective stress on the clay layer increases by 60 kN/m², what would be the total consolidation settlement in cm. Dry sand; e = 0.55 G,= 2.66: Sand G₂ = 2.66 e = 0.48. Clay w 34.78% G₂ = 2.74 Rock 1.5 m. 5 m Water table;

Answer 1

Question

Chapter 2, Problem 2.13P

(a)

To determine

Check whether the clay is normally consolidated or overconsolidated.

(b)

To determine

Find the final consolidation settlement.

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Refer to the soil profile shown in figure below. A laboratory consolidation test on the clay gave the results: o'c = 100 kPa Cc = 0.4 Cs = 0.2Cc If the average effective stress on the clay layer increases by 60 kN/m², what would be the total consolidation settlement in cm. Dry sand; e = 0.55 G,= 2.66: Sand G₂ = 2.66 e = 0.48. Clay w 34.78% G₂ = 2.74 Rock 1.5 m. 5 m Water table;

A sample of moist sand taken from the field was found to have a moisture content of 14% and a porosity of 38%. In the laboratory test that simulates field conditions, it was found that at its densest state, its void ratio is 85% and at its loosest state its void ratio is 40%. Determine the void ratio. Select one: a. 0.79 b. 0.57 c. 0.61 d. 0.42

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