中文摘要：

为避免极化曲线测试中平衡电位发生偏移,提出了阳极极化电流方法。根据锈蚀前后钢筋极化曲线特征分析对平衡电位发生偏移做出了合理解释,明确了相关影响因素。给出了基于阳极极化电流法的钢筋锈蚀临界极化电流密度及相应的腐蚀电流密度经验公式。试验结果表明,阳极极化电流方法能有效判别钢筋锈蚀,对应的临界极化电流密度为0.2μA/cm2。

英文摘要：

To avoid equilibrium potential shifts in polarization curve test,based on anodic polarization current method,the critical polarization current density of steel corrosion was given as well as the corresponding empirical formula of corrosion current density.Reasonable explanation to equilibrium potential shifts was given by studying polarization curves characteristic of rebar in concrete before and after corrosion.The results show that anodic polarization current method can effectively distinguish steel corrosion,and the critical polarization current density is 0.2 μA/cm2.