Solving Saturated/Unsaturated Water Flow Problems - Unsaturated Soil Mechanics in Engineering Practice - page 379

20

18

16

G s = 2.65
e = 0.479

14

12

10

8

6

4

2

0.1 1 10 100 1000

Soil suction, kPa

(a)

100

90

AEV = 2.2 kPa

80

70

60

50

40

30

Residual suction = 12 kPa

20

10

0

0.1 1 10 100 1000

Soil suction, kPa

(b)

1

λ = 1.7

0.1

0.01

0.1 1 10 100 1000

Soil suction, kPa

(c)

Figure 8.3 Determination of pore-size distribution index for sand soil: (a) gravimetric water
content versus soil suction; (b) degree of saturation versus soil suction; (c) effective degree of
saturation versus soil suction.