Conductive Mortar as Anode Material for Cathodic Protection of Steel in Concrete  

作　　者：徐晶 姚武 

机构地区：[1]Key Laboratory of Advanced Civil Engineering Materials (Tongji University), Ministry of Education

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2010年第5期883-888,共6页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the Specialized Research Fund for the Doctoral Program of Higher Education (No. 20070247063);National Natural Science Foundation of China (No. 50978200)

摘　　要：The behavior of a new type of secondary anode material made of carbon fiber reinforced cement used for cathodic protection of steel in concrete was studied. The mechanical, electrical and electrochemical properties of this conductive mortar were investigated. Results indicate that the addition of carbon fiber enhances the strength and ductility of the mortar, as well as the electrical property. The anodic polarization behavior was tested on specimens immersed in aqueous solutions of saturated Ca（OH）2 in the presence or absence of 3% NaCl. Based on impedance measurements the electrochemical parameters of conductive mortar were calculated. It is shown that the investigated conductive mortar can be used in cathodic protection of reinforced concrete. The study also shows that the optimum fiber content in mortar should be in the range from 0.5 vol% to 0.7 vol%.The behavior of a new type of secondary anode material made of carbon fiber reinforced cement used for cathodic protection of steel in concrete was studied. The mechanical, electrical and electrochemical properties of this conductive mortar were investigated. Results indicate that the addition of carbon fiber enhances the strength and ductility of the mortar, as well as the electrical property. The anodic polarization behavior was tested on specimens immersed in aqueous solutions of saturated Ca（OH）2 in the presence or absence of 3% NaCl. Based on impedance measurements the electrochemical parameters of conductive mortar were calculated. It is shown that the investigated conductive mortar can be used in cathodic protection of reinforced concrete. The study also shows that the optimum fiber content in mortar should be in the range from 0.5 vol% to 0.7 vol%.

关 键 词：reinforced concrete cathodic protection EIS electrochemical property 

分 类 号：TU528[建筑科学—建筑技术科学]