Table 4 Summary of test results.
From: Strengthening of corroded RC slab–column joints using thin-ply hybrid FRP under punching shear
Specimen | Vcr (kN) | Dcr (mm) | Vu (kN) | Du (mm) | % Change in Vu vs. S-H | Ki (kN/mm) |
|---|---|---|---|---|---|---|
S-N | 44.62 | 0.71 | 217 | 1.53 | + 49.66% | 62.8 |
S-H (Corroded Control) | 40.64 | 1.01 | 145 | 3.1 | 0.00% | 40.2 |
S-H-G1 | 70 | 0.98 | 188 | 1.73 | + 29.66% | 71.5 |
S-H-G2 | 72 | 0.98 | 209 | 1.31 | + 44.14% | 73.5 |
S-H-G3 | 70 | 0.98 | 219 | 1.13 | + 51.03% | 71.5 |
S-H-C1 | 89 | 1.02 | 203 | 2.10 | + 40.00% | 87.3 |
S-H-C2 | 121 | 1.01 | 232 | 1.58 | + 60.00% | 119.9 |
S-H-C3 | 120 | 1.02 | 227 | 1.81 | + 56.55% | 117.7 |
S-H-GCG | 121 | 1 | 228 | 1.15 | + 57.24% | 121.0 |
S-H-GC | 121 | 1.02 | 252 | 1.28 | + 73.79% | 118.7 |
S-H-GCC | 122 | 1.03 | 256 | 1.31 | + 76.55% | 118.5 |
Specimen | Ku (kN/mm) | Ductility index | Pre-cracking energy (kN·mm) | Post-Cracking Energy (kN·mm) | Total Energy (kN·mm) | Failure mode |
|---|---|---|---|---|---|---|
S-N | 210.22 | 1.00 | 15.84 | 157.76 | 173.60 | Flexure |
S-H (Corroded Control) | 49.93 | 2.03 | 20.52 | 246.28 | 266.80 | Flexure/ Punching |
S-H-G1 | 157.84 | 1.13 | 34.30 | 188.56 | 222.86 | Punching |
S-H-G2 | 419.27 | 0.85 | 35.28 | 148.32 | 183.60 | Punching/ Debonding |
S-H-G3 | 996.20 | 0.74 | 34.30 | 128.92 | 163.22 | Punching/ Debonding |
S-H-C1 | 105.56 | 1.37 | 45.39 | 261.21 | 306.60 | Punching |
S-H-C2 | 194.74 | 1.03 | 61.01 | 217.86 | 278.87 | Punching |
S-H-C3 | 135.44 | 1.18 | 61.20 | 252.84 | 314.04 | Punching/ Debonding |
S-H-GCG | 705.26 | 0.75 | 60.50 | 140.47 | 200.97 | Punching/ Debonding |
S-H-GC | 495.07 | 0.84 | 61.71 | 177.87 | 239.58 | Punching |
S-H-GCC | 484.18 | 0.85 | 62.83 | 184.15 | 246.98 | Punching |
