Environmental Engineering Reference
In-Depth Information
1
Predicted coefficient of
permeability
Measured coefficient of
permeability
0.1
0.01
0.001
0.1
1
10
100
1000
Soil suction, kPa
Figure 8.16
Comparison of predicted and measured relative permeability function for Columbia
sandy silt. (Data from Brooks and Corey, 1964.)
1.0
Best-fit curve
Experimental data
0.8
0.6
a
f
n
f
m
f
ψ
r
= 2.77
= 11.2
= 0.45
= 300
0.4
0.2
0
10
6
0.1
1
10
100
1000
10,000
100,000
Soil suction, kPa
Figure 8.17
Fredlund and Xing (1994) SWCC fit to experimental data for Superstition sand.
(Data from Richards, 1952.)
1
Predicted coefficient of
permeability
Measured coefficient of
permeability
0.1
0.01
0.001
0.1
1
10
100
Soil suction, kPa
Figure 8.18
Comparison of predicted and measured relative permeability for Superstition sand.
(Data from Richards, 1952.)
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