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Table 7 Statistical analysis of shear strength prediction for high strength SFRC beams with a/d ≥ 2.5 and plain, crimped and hooked fibers (HS-SB-PCH).

From: Principal Component and Multiple Regression Analysis for Steel Fiber Reinforced Concrete (SFRC) Beams

Study

V EXP /V ANA

AAE

λ 2

R 2

Ratingb (1–9)

Mean

SD

COV (%)

Confidencea

Ashour et al. (1992)

1.16

0.25

21.72

0.08

19.0

11.4

0.52

4

Imam et al. (1994)

1.15

0.23

19.66

0.07

17.8

7.1

0.54

3

Khuntia et al. (1999)

1.08

0.31

28.43

0.09

27.0

15.6

0.19

7

Kwak et al. (2002)

0.99

0.18

18.06

0.05

15.6

17.4

0.64

2

Li et al. (1992)

0.73

0.23

31.30

0.07

56.7

44.6

0.00

9

Narayanan and Darwish (1988)

1.01

0.25

24.63

0.08

21.7

17.0

0.38

6

Sharma (1986)

0.97

0.38

39.64

0.12

40.8

23.0

0.00

8

Shin et al. (1994)

1.04

0.22

20.94

0.07

17.6

11.8

0.44

5

Proposed model

0.99

0.14

14.61

0.04

14.3

10.0

0.66

1

  1. aα = 0.05, b 1(excellent) and 9(worst).