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Table 4 Parameters extracted from bond-slip model

From: Investigation into corrosion-induced bond degradation between concrete and steel rebar with acoustic emission and 3D laser scan techniques

Specimen

η1 (%)

η2 (%)

ϕ

Top slip

 

Bottom slip

α

β

s1

s2

α

β

s1

s2

RE#2

0.0

0.0

1.00

0.60

5.0

0.010

0.040

0.70

4.0

0.017

0.067

RE#3

0.0

0.0

1.00

0.60

3.0

0.010

0.040

0.65

2.8

0.027

0.077

C#1

1.5

10.0

1.07

0.60

4.5

0.009

0.090

0.70

6.5

0.059

0.190

C#3

2.2

11.2

0.80

0.60

4.5

0.002

0.140

0.62

6.0

0.023

0.230

C#4

4.1

7.10

0.98

0.20

9.0

0.033

0.114

0.30

8.7

0.130

0.130

C#5

7.1

11.8

1.10

0.30

8.0

0.002

0.057

0.40

8.0

0.040

0.160

C#6

7.7

34.0

0.74

0.20

3.5

0.024

0.024

0.50

3.6

0.090

0.090

C#7

7.8

40.0

0.74

0.10

2.5

0.030

0.030

0.20

3.0

0.095

0.095

C#8

9.1

30.4

0.88

0.20

6.0

0.007

0.051

0.35

10

0.052

0.200

C#9

10.3

37.5

0.67

0.25

5.0

0.014

0.190

0.35

5.0

0.033

0.240

C#10

12.2

48.8

0.90

0.20

4.5

0.003

0.190

0.40

8.0

0.053

0.140

C#11

15.6

58.4

0.60

0.40

2.5

0.002

0.002

0.60

4.8

0.150

0.150

C#12

17.8

70.1

0.74

0.40

2.8

0.019

0.019

0.40

3.5

0.077

0.077

C#13

18.1

71.2

0.83

0.25

4.5

0.016

0.016

0.35

5.0

0.100

0.100

C#14

29.5

72.1

0.72

0.25

2.0

0.023

0.023

0.40

6.0

0.160

0.160

C#15

35.0

90.4

0.70

0.12

5.0

0.045

0.045

0.20

6.0

0.090

0.090