Table 4 Results of modified GE and their comparison with GEIWIP porosity.

From: Porosity Measurement of Low Permeable Materials Using Gas Expansion Induced Water Intrusion Porosimetry (GEIWIP)

Sample ID

Test #

Pi (KPa)

Pe (KPa)

Pi/Pe

Vgrain (mL)

Porosity, \({{\boldsymbol{\varnothing }}}_{{\boldsymbol{GE}}}\)

S

\({\bar{{\boldsymbol{\varnothing }}}}_{{\boldsymbol{GE}}}\)

\({\bar{{\boldsymbol{\varnothing }}}}_{{\boldsymbol{GEIWIP}}}\)

GUF20

1

87.16

78.16

1.115

31.45

17.2

1.07

18.1

18.4

2

89.20

79.80

1.118

30.66

19.3

3

90.84

81.43

1.116

31.20

17.9

GUF30

1

83.47

74.88

1.115

31.50

17.1

0.80

17.9

17.8

2

86.34

77.34

1.116

31.20

17.9

3

90.02

80.61

1.117

30.90

18.7

PLCF30

1

87.16

78.15

1.115

31.50

14.9

0.52

14.6

14.4

2

90.88

81.43

1.115

31.50

14.9

3

91.66

82.24

1.114

31.80

14.0

PLCF30S

1

88.38

78.96

1.119

30.30

8.1

2.75

10.9

10.8

2

86.07

76.93

1.122

29.40

10.9

3

92.07

81.84

1.125

28.50

13.6