13 - Consolidation for Students/13 - Consolidation (2-Up).pdfConsolidation Test Results (Holtz &...
Transcript of 13 - Consolidation for Students/13 - Consolidation (2-Up).pdfConsolidation Test Results (Holtz &...
3/31/2015
1
Consolidation
Chapter 9
Consolidation
3/31/2015
2
Consolidation Model
Consolidation Model
0
3/31/2015
3
Consolidation Model
Consolidation Model
0
3/31/2015
4
Consolidation Model
Consolidation Model
∆ ∆ ’+ ∆ 0
3/31/2015
5
Consolidation Model
∆ ∆ ’+ ∆
Consolidation Model
∆ ∆ ’+ ∆ 0
3/31/2015
6
Consolidation Test
Soilspecimen
Consolidation Test
Dial Gauge
Oedometer
Weights
Lever Arm
3/31/2015
7
Consolidation Test Results
Consolidation Test Results
3/31/2015
8
Consolidation Test Results
Consolidation Test Results
CcVirginConsolidationCurve
3/31/2015
9
3/31/2015
10
Consolidation Test Results
CcVirginConsolidationCurve
3/31/2015
11
Consolidation Test Results
(Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)
3/31/2015
12
Sample Disturbance
poor quality sample
0.4 e0
Schmertmann Procedure
0.4
c
3/31/2015
13
Schmertmann Procedure
0.4
sc
s
s
Consolidation Settlement
3/31/2015
14
Consolidation Settlement
∆1
∆1
∆∆ ∆
3/31/2015
15
The preconsolidation stressis 70 kN/m2, the compression index is 0.2 and the swelling index is 0.1.
Consolidation Settlement
∆ ∆ log
∆ log log ∆ log log∆
NormallyConsolidatedSoil
3/31/2015
16
Consolidation Settlement
∆ log log∆
OverconsolidatedSoil