Environmental Engineering Reference
In-Depth Information
35
Transition
zone
30
Air-entry
value
25
Inflection point
20
15
Boundary
effect zone
Residual zone
10
5
Residual
conditions
0
10
6
0.1
1
10
100
1000
10,000
100,000
Soil suction, kPa
Figure 4.98
Desorption branch with definition of variables for SWCC.
60
50
Drying scanning
curve
40
Initial stress state from
soil could dry or wet
30
Wetting or adsorption
(bounding) curve
Drying or desorption
(bounding) curve
20
Wetting scanning
curve
10
0
0.1
1
10
100
1000
10,000
100,000
10
6
Soil suction, kPa
Figure 4.99
Relationship of initial stress state to hysteresis loops of SWCC (from Fredlund,
2003).
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