用电化学方法研究聚羧酸系和萘系减水剂对模拟混凝土孔隙液中钢筋和混凝土试样中钢筋腐蚀行为的影响.结果表明,两种减水剂对模拟孔隙液中钢筋的腐蚀基本没有明显的抑制作用,但适量的减水剂可以提高混凝土的致密性,从而抑制钢筋腐蚀.通过对浸泡在2.5 mol/L NaCl溶液中的混凝土试样进行比较得知,0.1%～0.3%的聚羧酸系减水剂对混凝土中钢筋腐蚀的抑制作用大于0.2%含量的萘系减水剂,并对其抑制机理进行了初步探讨. The effects of polycarboxylic acid and naphthalene superplasticizer on the corrosion behavior of steel bar in concrete and concrete specimens simulated by electrochemical method were studied by electrochemical method.The results showed that the corrosion resistance of the steel bar in simulated pore fluid No significant inhibition, but the amount of superplasticizer can improve the compactness of concrete, thereby inhibiting the corrosion of steel.By soaking in 2.5 mol / L NaCl solution of concrete samples were compared, 0.1% to 0.3% of the Polycarboxylate superplasticizer reinforced concrete corrosion inhibition of greater than 0.2% naphthalene superplasticizer, and its inhibition mechanism was discussed.