电化学除氯过程钢筋网周围电场与氯离子分布特征试验研究
Experimental analysis on distribution characteristics of chloride and electric field around reinforcement nets during electrochemical chloride extraction

探明电化学除氯过程混凝土内部的电场分布特征有利于研究混凝土除氯后的氯离子非均匀分布现象。为进一步研究电化学除氯过程中混凝土内部电场对氯离子迁出的影响，将一种屏蔽式预埋电极阵列应用于内蕴氯盐的钢筋网布置混凝土试件电化学除氯试验中，探究钢筋网周围电场及氯离子的分布特征。结果表明，混凝土内电场分布影响氯离子的迁出，电场强度大的区域，氯离子迁出速率高，残余氯离子浓度低；电场强度小的区域，氯离子迁出速率低，氯离子存在堆积现象。
It is helpful to investigate the non-uniform distribution of chloride after electrochemical chloride extraction by ascertaining the distribution characteristics of electric field during electrochemical chloride extraction. In order to study the effect of electric field on the migration of chloride ions, a shielded buried electrode array was used to ascertain the distribution characteristics of chloride and electric field around reinforcement nets. The results show that the electric field in concrete affects the migration of chloride ions, when a region with strong electric field, chloride ion migration rate is high, residual chloride ion concentration is low, when a region with week electric field, chloride ion migration rate is low residual chloride ion concentration is high.