模拟酸雨环境下再生混凝土的电化学测试与分析

Electrochemical test and analysis of recycled concrete under simulated acid rain environment

利用硫酸溶液模拟人工酸雨环境,对其对再生混凝土性能的影响进行了测试和总结。试验过程中,电化学工作站测试出自腐蚀电位负值变大,混凝土保护层的电阻值变小,钢筋的腐蚀速率明显增大。试验所得数据及结论为进一步研究酸雨对再生混凝土性能影响问题提供基础和依据,为再生骨料混凝土的扩大应用和耐久性设计提供参考。

An artificial acid rain environment is simulated with sulfuric acid solution, and then its impact on the performance of recycled concrete is tested and summarized. During the test, it is found out by the electrochemical workstation that the negative value of eeorr becomes larger, while the resistance value of the concrete protection layer becomes smaller, thus the corrosion rate is obviously increased. The data and the conclusion from the test lay a basis for the further study made on the impact from acid rain on the performance of recycled concrete and provide some references for the expanded application and the durability design of the recycled aggregate concrete.