模拟氯盐和硫酸盐环境下钢筋的腐蚀行为研究  

Research on the Corrosion Behavior of Steel in Simulated Chloride and Sulfate Environment

作　　者：曹承伟[1] 赵铁军[1] 马志鸣[2] 

机构地区：[1]青岛理工大学土木工程学院,青岛市266033 [2]同济大学建筑工程系,上海市200092

出　　处：《公路》2016年第5期157-161,共5页Highway

基　　金：国家重点基础研究发展计划"973"项目;项目编号2015CB655100

摘　　要：为研究氯盐和硫酸盐环境下钢筋的腐蚀行为,在饱和Ca(OH)2溶液中分别掺入浓度为0、0.01mol/L、0.02mol/L、0.03mol/L、0.04mol/L、0.05mol/L的NaCl溶液,研究单一氯盐对钢筋的腐蚀行为;在饱和Ca(OH)2溶液中分别掺入浓度为0、0.5mol/L、1mol/L的Na2SO4溶液,研究单一硫酸盐对钢筋的腐蚀行为;在饱和Ca(OH)2溶液中,以0.05mol/L的NaCl溶液为定量,分别掺入浓度为0、0.5mol/L、1mol/L的Na2SO4溶液,研究在复合环境下钢筋的腐蚀行为。利用电化学阻抗谱法(EIS)和线性极化法(LPR)来评定钢筋的锈蚀行为,试验结果表明:浓度与极化电阻成反比,与腐蚀电流密度成正比。In order to study corrosion behavior of steel in chloride and Sulfate environment,the reinforced electrode are mixed with the concentration of 0mol/L,0.01mol/L,0.02mol/L,0.03mol/L,0.04mol/L and 0.05mol/L NaCl solution in saturated Ca（OH）2;the reinforced electrode are mixed with the concentration of 0mol/L,0.5mol/L and 1mol/L Na2SO4 solution in saturated Ca（OH）2;0.05mol/L NaCl solution is mixed with the concentration of 0 mol/L,0.5 mol/L and 1 mol/L Na2SO4 solution to study the corrosion behavior under reinforced composite environment in saturated Ca（OH）2.In this paper the corrosion behavior of steel is evaluated by using electrochemical impedance spectroscopy（EIS）and linear polarization method（LPR）.The experimental results show that the ion concentration is inversely proportional to the polarization resistance,and is proportional to the corrosion current density.

关 键 词：钢筋锈蚀蚀 钢筋电极 腐蚀 电化学阻抗谱法 线性极化法 

分 类 号：U414.01[交通运输工程—道路与铁道工程]