【摘要】 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。更多还原

【Abstract】 ? Based on the method of linear polarization,AC impedance and time potential,it is studied that the properties of seawater corrosion resistance of rebar in normal concrete and fly ash concrete.The results show that the properties of seawater corrosion resistance of rebar in fly ash concrete are obviously superior to that in normal concrete,resulting from the increase of impedance,diffusion impedance coefficient of the fly ash concrete,and the increase of resistance,capacity of rebar membrance and positive polarized potential by second hydration of fly ash. 〔更多还原