Table 1 Sandstone water absorption test results.

From: Deterioration characterization of sandstone physical and mechanical properties under mining and water action

Sandstone type

Sandstone number

Number of wet and dry cycles

n

Drying quality

md/g

Absorbent quality

ma/g

Water absorption

\(\user2{\omega }_{\user2{n}}\)/%

Average value

\({\bar{\user2{\omega} }}_{\user2{n}}\)/%

Unmined sandstone

A-1

0

488.48

496.38

1.617

1.631

A-2

488.53

496.55

1.642

A-3

488.52

496.50

1.633

Mining sandstone

B-1

0

489.08

497.39

1.699

1.687

B-2

489.18

497.26

1.652

B-3

489.16

496.92

1.587

C-1

1

500.32

508.94

1.723

1.735

C-2

497.77

506.47

1.748

C-3

498.26

506.90

1.734

D-1

5

501.96

511.94

1.988

1.975

D-2

501.75

511.63

1.969

D-3

501.77

511.64

1.967

E-1

10

503.69

513.97

2.041

2.033

E-2

503.93

514.11

2.022

E-3

503.93

514.18

2.035

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