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Table 2 Summary of test result.

From: Effect of Impact Load on Splice Length of Reinforcing Bars

Specimens

Drop height (m)

Drop weight (kg)

Impact energy (kJ)

Pp (kN)

δp (mm)

δr (mm)

εu (10−6 mm/mm)

εr (mm/mm)

Strain rate (1/s)

S-18-300-L

3.15

272.3

8.41

3518

23.1

18.3

1280

450

2.91

6.30

272.3

16.83

4953

86.6

75.6

2140

1680

4.14

12.60

272.3

33.66

8002

165.6

151.7

3070

1760

5.30

5.74

597.3

33.65

6771

194.6

176.1

3100

1950

5.93

S-18-400-L

3.15

272.3

8.41

3622

12.8

5.8

1600

380

2.91

6.30

272.3

16.83

5380

60.5

50.6

2150

540

4.15

12.60

272.3

33.66

8566

150.9

138.0

3140

1370

5.31

5.74

597.3

33.65

7108

167.0

159.0

3360

1580

5.93

S-18-300

1.58

532.3

8.22

2540

55.8

52.4

1610

320

3.19

3.15

532.3

16.45

4588

101.7

88.7

2160

1370

4.11

4.73

532.3

24.67

5716

159.6

144.9

2570

840

4.97

1.96

857.3

16.45

3590

137.7

135.2

2430

1380

4.16

S-18-400

1.58

532.3

8.22

3123

38.9

34.7

2030

340

3.16

3.15

532.3

16.45

4589

83.2

77.8

2210

680

4.09

6.30

532.3

32.90

6768

183.2

167.0

3430

1130

5.61

1.96

857.3

16.45

3541

104.0

100.0

2540

1050

4.14

S-25-300

1.58

532.3

8.22

3140

32.4

30.2

1690

240

2.80

3.15

532.3

16.45

4500

95.2

89.8

2170

1360

3.53

4.73

532.3

24.67

5484

134.8

118.1

3320

780

4.26

1.96

857.3

16.45

S-25-400

1.58

532.3

8.22

2685

23.5

15.1

2070

320

2.75

3.15

532.3

16.45

4500

75.0

72.3

2290

8970

3.49

6.30

532.3

32.90

6768

193.8

185.2

3470

1520

4.70

1.96

857.3

16.45

4410

122.8

118.4

2580

320

3.52

  1. Impact energy was calculated from potential energy of mgh (i.e. m drop weight; g gravity acceleration 9.81 m/s2; and h = drop height). Strain rate was calculated from the energy based method and section analysis.