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Table 4 Summary of column test results

From: Seismic Retrofitting of RC Circular Columns Using Carbon Fiber, Glass Fiber, or Ductile PET Fiber

Column index Load Displacement Displacement ductility (mm) Drift ratio (%) Failure mode
Py (kNm) Pmax (kNm) Δy (mm) Δmax (mm)
C-1-Control 116 147 11.5 50.4 4.4 4.2 Main bar buckling
C-1-CF 126 178 7.9 78.4 9.9 6.5 CF rupture
C-1-PET 130 188 7.2 96.1 13.3 8.0 Main bar rupture
C-2-Control 134 157 11.3 58.5 5.2 4.9 Main bar buckling
C-2-GF 122 174 (222)1 13.7 98.0 (148)1 7.2 (10.8)1 8.2 (12.3)1 GF rupture
C-2-PET 134 180 10.6 96.0 9.1 8.0 Main bar rupture
C-3-Control 146 172 15.1 44.6 3.0 3.6 Shear failure
C-3-PET 133 214 9.6 83.3 8.7 6.7 Main bar rupture
C-3-HF-hoop 138 195 11.5 96.7 8.4 7.8 Main bar rupture
C-3-HF-spiral 133 211 10.9 88.4 8.1 7.1 Shear failure (upper part of column)
C-3-HF-spiral-LS 148 217 10.0 82.0 8.2 6.6 Shear failure (upper part of column)
  1. Py is yield load; Pmax is the maximum load; Δy is yield displacement; Δmax is displacement at the maximum load; 1Monotonic loading