Specimens

Concrete strength (MPa)

No. of holes

Diameter of hole (mm)

Ultimate load, Pu (kN)

Relative slip, δu (mm)

Characteristic values

Ductility, δuku

Load, Prk (kN)

Relative slip, δuk (mm)

C180-P12

C180-P12-D30x1

C180-P12-D30x2

C180-P12-D30x3

C180-P12-D50x1

C180-P12-D50x2

C180-P12-D50x3

180

?

1

2

3

1

2

3

?

30

30

30

50

50

50

730.0

1011.0

962.3

963.0

1032.3

1051.8

1135.0

8.34

6.57

9.34

2.29

5.05

7.76

13.46

657.0

909.9

866.1

866.7

929.1

946.6

1021.5

14.38

14.93

13.22

6.18

7.38

10.70

19.03

1.78

2.27

1.42

2.70

1.46

1.37

1.41

C80-P12

C80-P12-D30x1

C80-P12-D30x2

C80-P12-D30x3

C80-P12-D50x1

C80-P12-D50x2

C80-P12-D50x3

80

?

1

2

3

1

2

3

?

30

30

30

50

50

50

416.6

368.8

474.9

575.3

535.0

613.7

754.7

0.84

1.76

1.04

1.32

0.61

3.68

1.73

374.9

331.9

427.4

517.8

481.5

552.3

679.2

2.47

3.61

1.59

1.48

1.82

6.62

2.57

2.95

2.05

1.53

1.12

2.98

1.80

1.30