Table 8 Test results for specimens under cyclic loadings at high stress and at large strain.
Specimen no. | Ultimate load P u (kN) | f u/f us (%) | Av. bond strength τ u (MPa) | Relative residual deformation (%) | Failure mode | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
CH– | CL– | CH– | CL– | CH– | CL– | CH– | CL– | δ 20 | δ 4 | δ 8 | CH– | CL– |
H400D16 | 116 | 120 | 0.84 | 0.87 | – | 25.4 | 0.60 | 0.07 | 0.16 | Bar fracture | Bar pull-out | |
H400D25 | 290 | 291 | 0.90 | 0.90 | 27.6 | 25.7 | 0.06 | 0.03 | 0.15 | Bar pull-out | Bar pull-out | |
H400D32 | 482 | 478 | 1.02 | 1.02 | 27.4 | 25.9 | 0.07 | 0.03 | 0.07 | Bar pull-out | Bar pull-out | |
H500D16 | 134 | 147 | 0.87 | 0.95 | 28.3 | 31.0 | 0.37 | 0.12 | 0.31 | Bar pull-out | Bar pull-out | |
H500D25 | 306 | 319 | 0.85 | 0.89 | 29.1 | 30.3 | 0.16 | 0.03 | 0.16 | Bar pull-out | Bar pull-out | |
H500D32 | 525 | 539 | 0.91 | 0.93 | 29.9 | 30.7 | 0.16 | 0.10 | 0.22 | Bar pull-out | Bar pull-out | |
Mean value (coefficient of variation) | 0.90 (0.074) | 0.93 (0.056) | – | – | 0.24 (0.88) | 0.06 (0.57) | 0.18 (0.45) | – | – | |||