Research Article
Experimental Study on the Effect of Boric Acid Corrosion on the Performance of Reinforced Concrete
Table 4
Mechanical properties of steel bar and steel plate under dry-wet cycles.
| Test environment | Steel bar | Steel plate | Age (d) | Concentration (%) | Yield strength (MPa) | Ultimate strength (MPa) | Corrosion rate (%) | Yield strength (MPa) | Ultimate strength (MPa) | Corrosion rate (%) |
| 60 | 0 | 460.9 | 620.0 | 0.099 | 312.3 | 471.5 | 0.073 | 0.27 | 461.0 | 619.7 | 0.101 | 312.0 | 471.0 | 0.079 | 0.8 | 461.3 | 619.6 | 0.105 | 312.5 | 471.3 | 0.099 | 3 | 461.0 | 620.1 | 0.107 | 312.5 | 471.3 | 0.120 |
| 120 | 0 | 461.2 | 619.8 | 0.137 | 312.1 | 471.2 | 0.121 | 0.27 | 461.0 | 619.8 | 0.144 | 312.4 | 471.2 | 0.131 | 0.8 | 460.9 | 619.8 | 0.148 | 312.0 | 471.0 | 0.142 | 3 | 461.0 | 619.6 | 0.153 | 312.3 | 470.8 | 0.151 |
| 180 | 0 | 460.8 | 619.3 | 0.164 | 312.4 | 471.6 | 0.157 | 0.27 | 461.2 | 619.5 | 0.171 | 312.4 | 471.7 | 0.162 | 0.8 | 461.0 | 619.0 | 0.185 | 312.2 | 471.0 | 0.173 | 3 | 460.8 | 619.6 | 0.167 | 312.3 | 471.4 | 0.167 |
| 240 | 0 | 461.3 | 619.0 | 0.190 | 312.5 | 471.7 | 0.183 | 0.27 | 461.0 | 619.3 | 0.188 | 312.0 | 471.5 | 0.194 | 0.8 | 461.5 | 618.8 | 0.191 | 311.8 | 471.2 | 0.197 | 3 | 460.9 | 619.5 | 0.185 | 312.2 | 471.1 | 0.183 |
| 300 | 0 | 459.8 | 619.0 | 0.212 | 312.0 | 470.5 | 0.193 | 0.27 | 460.7 | 618.7 | 0.236 | 311.8 | 470.6 | 0.236 | 0.8 | 460.4 | 619.1 | 0.235 | 311.9 | 470.0 | 0.229 | 3 | 459.3 | 619.4 | 0.201 | 311.5 | 470.4 | 0.193 |
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