Question

The compression diagram for a preconsolidated clay indicates that it had been compressed under a pressure of 240 kN/m2. The compression index is 0.9; its void ratio under a pressure of 180 kN/m2 is 1.5. Estimate the void ratio if the pressure is increased to 360 kN/m2, to the nearest 2nd decimal place (Use Cs = 1/3 Cc)

Answer 1

Draw the compression diagram. 1.5 180 360 240 kN/m2 Calculate the void ratio as follows: C - 1.5- 706 240 46 - 1.5-2 log(180) 39 log (240) 5x0.9 - 1.5-e 3*°** 10g (240 180 e = 1.46 Calculate the void ratio as follows: Czące 360 log240) 09- 1.46- ez = 1.3