Table 6 The test results of the clay brick 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

\(K\)(%)

3

2522

1681

18.66

12.13

2461

1568

16.14

11.11

9.17

0.02

13.60

6

2422

1615

15.76

11.19

2312

1495

13.50

9.94

12.50

0.05

16.13

9

2326

1550

18.63

10.31

2063

1443

14.76

8.29

24.37

0.13

18.58

12

2486

1657

16.19

11.78

2159

1518

10.39

9.09

29.65

0.15

34.94

15

2438

1647

13.90

11.43

2022

1342

7.15

7.77

47.07

0.21

43.75

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