Group

Slab

Cracking load (KN)

Ultimate load (KN)

Max. deflection (mm)

Max. strain (μe)

Mode of failure

Bars

Concrete

I

Steel

S-3C-25-0

52

78.9

44.14

10470

3820

A

II

Circular GFRP

G-3C-25-1.5

22

63.0

45.92

5650

3705

B

Square GFRP

G-3S-25-1.5

27.8

70.3

32.18

7370

3420

B

III

Square GFRP

G-3S-35-1.5

38.5

74.4

32.98

5120

3562

B

Square GFRP

G-3S-45-1.5

41.5

80.0

36.40

8528

3730

B

IV

Square GFRP

G-4S-25-1.5

37.5

77.0

28.82

5911

3501

B

Square GFRP

G-5S-25-1.5

48

90.0

23.62

5131

3800

B

V

Square GFRP

G-3S-25-0

19.2

64.4

28.62

4967

3201

B

Square GFRP

G-3S-25-2.5

32.2

75.2

31.74

6208

3430

B