1- Find Coefficient of consolidation in cm²/s using root time and TV90% = 0.848. 2- Find Preconsolidation pressure (oc) and compression index (Cc).

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Q1/ specimen of the fine-grained soil, 75 mm in diameter and 20 mm thick was
tested in an oedometer in a laboratory. At applying pressure (240 kN/m²), the time
with dial gauge readings are:
Time (min)
0
Settlement (mm) 0
0.25 1
0.22
0.42
Vertical pressure (kPa) 15
Settlement (mm)
0.1
Void ratio
1.88
4
0.6
30
0.11
1.87
9
0.71
16
0.79
And the void ratio and settlement for each load increment is shown in the table
below.
60
0.21
1.85
120
1.13
1.72
100
1.04
36
64
0.91
0.86
240
2.17
1.57
480
3.15
1.43
1- Find Coefficient of consolidation in cm²/s using root time and TV90% = 0.848.
2- Find Preconsolidation pressure (oc) and compression index (Cc).
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Transcribed Image Text:Q1/ specimen of the fine-grained soil, 75 mm in diameter and 20 mm thick was tested in an oedometer in a laboratory. At applying pressure (240 kN/m²), the time with dial gauge readings are: Time (min) 0 Settlement (mm) 0 0.25 1 0.22 0.42 Vertical pressure (kPa) 15 Settlement (mm) 0.1 Void ratio 1.88 4 0.6 30 0.11 1.87 9 0.71 16 0.79 And the void ratio and settlement for each load increment is shown in the table below. 60 0.21 1.85 120 1.13 1.72 100 1.04 36 64 0.91 0.86 240 2.17 1.57 480 3.15 1.43 1- Find Coefficient of consolidation in cm²/s using root time and TV90% = 0.848. 2- Find Preconsolidation pressure (oc) and compression index (Cc). Scanned by TapScanner
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