The Discussion about Concrete on the Relationship between Corrosion Resistance and Time under Bending Loads

摘要

Through the corrosion test method of different active mineral admixture concrete under bending loads，we studied the C50 concrete specimen under bending loads on corrosion resistance and with the relation to corrosion time about the condition of specimen in saline soil. The results showed that the maximum corrosion effect on concrete with the saline soil in the short-term (1 year) appeared from the sixth to the ninth month (under maximum corrosion loss coefficient), but in other time is smaller. Concrete with gas forming admixture exhibit best corrosion resistance, fly ash concrete come second and normal concrete show worst performance in corrosion resistance, we propose corrosion prevention measures for concrete structures under loads in saline soil region to improve the durability of concrete structures according to the result.