Shear Behaviour of RC Beams Strengthened by Various Ultrahigh Performance Fibre-Reinforced Concrete Systems
Table 10
Results of the RC beam specimens strengthened with reinforced UHPFRC layers with different reinforcement ratios with constant shear span-to-depth ratio = 2.0.
Beam ID
Shear span (mm)
Longitudinal reinforcement (ratio = As/AUHPFRC %)
Transversal reinforcement (ratio = Ast/AUHPFRC %)
Ultimate load (kN)
Deflection at ultimate load (mm)
Vertical face
Lower face
Vertical face
SB-2SJ-2.0
384
—
—
—
317
9.00
SB-2SJ-2.3-3.6
384
2Ø10 (2.30)
—
5Ø8/m (3.60)
361
11.00
SB-2SJ-3.3-3.6
384
2Ø12 (3.30)
—
5Ø8/m (3.60)
400
13.75
SB-2SJ-5.8-3.6
384
2Ø16 (5.80)
—
5Ø8/m (3.60)
465
14.25
SB-2SJ-7.4-3.6
384
2Ø18 (7.40)
—
5Ø8/m (3.60)
511
16.45
SB-2SJ-7.4-5.7
384
2Ø18 (7.40)
5Ø10/m (5.70)
515
17.20
SB-2SJ-7.4-7.3
384
2Ø18 (7.40)
10Ø8/m (7.30)
516
17.35
SB-3SJ-2.0
384
—
—
—
356
7.20
SB-3SJ-2.3-2.6
384
2Ø10 (2.30)
2Ø10 (2.6)
5Ø8/m (3.60)
490
9.35
SB-3SJ-3.3-3.8
384
2Ø12 (3.30)
2Ø12 (3.8)
5Ø8/m (3.60)
560
11.70
SB-3SJ-5.8-6.7
384
2Ø16 (5.80)
2Ø16 (6.70)
5Ø8/m (3.60)
640
13.30
SB-3SJ-7.4-8.5
384
2Ø18 (7.40)
2Ø18 (8.5)
5Ø8/m (3.60)
673
14.25
As = area of longitudinal reinforcement, Ast = area of transversal reinforcement, and AUHPFRC = area of UHPFRC layer.
