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应用线性极化法、交流阻抗法和时间电位法等电化学方法对普通混凝土和掺粉煤灰混凝土中钢筋耐海水侵蚀性能进行了研究。研究结果表明 ,由于掺粉煤灰混凝土的阻抗的提高 ,扩散阻抗系数的提高以及由于粉煤灰二次水化引起的钢筋膜电阻、膜电容及阳极极化电位提高 ,使掺粉煤灰混凝土中钢筋耐海水侵蚀性能大大优于普通混凝土。
The seawater erosion resistance of reinforced concrete in ordinary concrete and fly ash concrete was studied by using linear polarization method, alternating current impedance method and time potential method. The results show that due to the increase of impedance of fly ash concrete, the increase of diffusion coefficient and the increase of membrane resistance and membrane polarization and anodic polarization potential caused by secondary hydration of fly ash, fly ash concrete The corrosion resistance of seawater in steel is much better than ordinary concrete.