Issue 58

R. Capozucca et alii, Frattura ed Integrità Strutturale, 58 (2021) 386-401; DOI: 10.3221/IGF-ESIS.58.28

Beam B0

Beam B1 with NSM CFRP rod

Damage degree

Moment [kNm]

Load [kN]

Moment [kNm]

Load [kN]

D1 D2 D3 D4 D5 D6 D7

2.16 4.28 9.46

7.21

2.13 4.29 9.48

7.10

14.32 31.50 38.73 47.80

14.29 31.61 38.77 87.97

11.61 14.30

11.63 26.39 31.48 34.62

- -

- -

104.92 115.39

Table 2: Experimental step of loading.

Steel strain extradoss ε s1

Steel strain intradoss ε s2

Curvature χ [1/mm·10 -6 ]

Deflection δ [mm]

Concrete strain ε c,sup

D1

0.56

-0.000203

-0.000136

0.000660

5.31

D2

1.79

-0.000494

-0.000181

0.001092

8.48

D3

5.07

-0.001011

-0.000362

0.002399

18.41

D4

8.62

-0.001796

-0.000154

0.004676

32.2

D5

28.02

-

-

-

-

Table 3: Experimental data obtained by static tests for beam B0.

Concrete strain ε c,sup

Steel strain extradoss ε s1

Steel strain intradoss ε s2

CFRP Strain ε cfrp

Curvature χ [1/mm10 -6 ]

Deflection δ [mm]

D1

0.25

-0.000070

-0.000096

0.000034

0.000093

1.02

D2

0.67

-0.000171

-0.000186

0.000238

0.000329

2.78

D3

2.17

-0.000421

-0.000422

0.000925

0.001373

9.70

D4

2.88

-0.000530

-0.000510

0.001231

0.001767

12.31

D5

7.17

-0.001208

-0.001039

0.002873

0.004151

28.05

D6

10.66

-0.001690

-0.001290

0.002764

0.005748

38.04

D7

15.25

-0.001997

-0.001459

0.002836

0.008690

54.86

Table 4: Experimental data obtained by static tests for beam B1.

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