Table 2 Results of porosity determination of three rock samples.

From: Acoustic emission characteristics and energy evolution law of rock damage process of different pore structures under cyclic loading

Limestone

Porosity (%)

Average porosity (%)

Granite

Porosity (%)

Average porosity (%)

Red sandstone

Porosity (%)

Average porosity (%)

A-1

1.256

1.182

H-1

1.030

1.013

S-1

13.571

14.117

A-2

1.201

H-2

1.027

S-2

15.492

A-3

1.211

H-3

0.998

S-3

13.178

A-4

1.130

H-4

0.991

S-4

13.287

A-5

1.150

H-5

1.021

S-5

15.457

A-6

1.141

H-6

1.012

S-6

13.537

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