Table 2 Results of tensile bond tests.
Specimen | Stage I | Stage II | Stage III | No. of cracks | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
σI (MPa) | εI (%) | EI (GPa) | σII (MPa) | εII (%) | EII (GPa) | σIII (MPa) | εIII (%) | EIII (GPa) | ||
B1 | 1.29 | 0.04 | 3.49 | 2.99 | – | – | 4.17 | – | – | 6 |
B2 | 1.79 | 0.17 | 1.06 | 2.92 | 0.94 | 0.15 | 5.70 | 1.73 | 0.35 | 5 |
B3* | 2.37 | 0.14 | 1.70 | 2.46 | 0.77 | 0.01 | 4.80 | 1.00 | 0.99 | 4 |
B4 | 1.55 | 0.03 | 5.04 | 3.88 | 0.81 | 0.30 | 4.60 | 0.94 | 0.56 | 5 |
B5 | 2.00 | 0.12 | 1.65 | 2.96 | 0.81 | 0.14 | 4.74 | 1.27 | 0.39 | 5 |
C1 | 2.41 | 0.05 | 4.97 | – | – | – | 4.47 | 0.87 | – | 5 |
C2 | 2.63 | 0.03 | 7.61 | 4.12 | 1.20 | 0.13 | 6.67 | 1.71 | 0.49 | 5 |
C3 | 2.51 | 0.07 | 3.57 | 4.24 | 0.83 | 0.23 | 5.96 | 1.11 | 0.62 | 5 |
C4 | 2.09 | – | – | 4.35 | 0.71 | 0.32 | 5.80 | 0.89 | 0.83 | 6 |
C5 | 1.71 | – | – | 4.21 | 0.61 | 0.41 | 6.16 | 0.93 | 0.60 | 5 |