Table 5 The testing results of the sandstone samples before and after deterioration.

From: Evaluation of deterioration degree and consolidation effectiveness in sandstone and clay brick materials based on the micro-drilling resistance method

Cycle times

Undeteriorated samples

Deteriorated samples

\(V_{p0}\) (m/s)

\(V_{s0}\) (m/s)

\(DR_{UD}\) (N)

\(E_{d0}\) (GPa)

\(V_{p}\) (m/s)

\(V_{s}\) (m/s)

\(DR_{D}\) (N)

\(E_{d}\) (GPa)

\(\Delta E_{d}\) (%)

Fs

\(K\)(%)

2

2933

1942

29.92

19.00

2695

1770

25.01

15.94

16.11

0.09

12.22

4

3017

1961

30.36

19.80

2717

1757

19.39

15.99

19.24

0.11

25.37

6

2966

1934

27.68

19.19

2525

1701

17.07

14.25

25.74

0.17

37.00

7

3021

1953

28.38

19.76

2513

1678

12.98

14.03

29.00

0.20

43.80

8

3012

1942

28.98

19.59

2315

1585

11.69

12.07

38.39

0.30

54.51

Back to article page