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Table 4 The characteristic test values of the test beams

From: Entire mechanical analysis of prestressed CFRP strengthened RC beams under different prestressed introduced methods

Specimen name

Mcr \(\left(\mathbf{kN}\cdot\mathbf m\right)\)

Inc. (%)

My \(\left(\mathbf{kN}\cdot\mathbf m\right)\)

Inc. (%)

Mu \(\left(\mathbf{kN}\cdot\mathbf m\right)\)

Inc. (%)

Exp.

Cal.

(1)

Exp.

Cal.

(2)

Exp.

Cal.

(3)

CL

9.0

8.83

1.02

-

41.6

40.9

1.02

-

49.2

42.8

1.15

-

CF-100

10.8

9.62

1.12

20.0

52.8

47.6

1.11

26.9

62.4

57.5

1.09

26.8

CF-200

12.0

10.27

1.17

33.3

51.7

48.5

1.07

24.3

64.2

58.2

1.10

30.5

SCF-100

10.5

9.62

1.09

16.7

46.3

47.6

0.97

11.3

51.6

55.9

0.92

4.9

SCF-200

12.0

10.27

1.17

33.3

51.3

48.5

1.06

23.3

53.4

60.2

0.89

8.5

Ave.

-

-

1.14

-

-

-

1.06

-

-

-

1.03

-

COV

-

-

0.05

-

-

-

0.04

-

-

-

0.10

-

  1. Mcr-cracking moment; My-yielding moment; Mu-ultimate moment; Exp.-experimental value; Cal.-calculated value; Inc.-increment ratio; (1)-ratio of the experimental value to the calculated value of the cracking moment; (2)-ratio of the experimental value to the calculated value of the yielding moment; (3)-ratio of the experimental value to the calculated value of the ultimate moment