Corrosion evaluation of industrial inorganic base coating on reinforcement by electrochemical impedance spectroscopy

Subject Areas :

Yadollah  Yaghobinejad ¹ (Assistant professor, Department of mechanical and materials engineering, Birjand University of Technology, Birjand, Khorasan Jonoubi, Iran)
Abdollah  Afshar ² (Professor, Department of materials science and engineering, Sharif University of Technology, Tehran, Iran)
Abolghasem  Dolati ³ (Professor, Department of materials science and engineering, Sharif University of Technology, Tehran, Iran)

Received: 2017-01-08 Accepted : 2017-03-06 Published : 2018-11-22

Keywords: Corrosion, Concrete, Electrochemical impedance spectroscopy, Paint, Rebar,

Abstract :

In this study, the effect of several industrial protective coatings such as alkyd base primer, zinc rich primer and polyamide primer coatings in compassion with the surface paints comprising alkyd, polyamide and polyamine were investigated. For evaluating corrosion and durability of concrete properties, strength of mixture, electrochemical impedance spectroscopy (EIS) and pull of test was accomplished. The outcomes significantly demonstrated EIS method performs an excellent response to corrosion analysis of coating upon the rebar. Beside, in harsh media the two parts of isocyanide-acrylic coating with a surface resistance approximately 7.3 GΩ.cm2 shows the best manner. In this study, the effect of several industrial protective coatings such as alkyd base primer, zinc rich primer and polyamide primer coatings in compassion with the surface paints comprising alkyd, polyamide and polyamine were investigated. For evaluating corrosion and durability of concrete properties, strength of mixture, electrochemical impedance spectroscopy (EIS) and pull of test was accomplished. The outcomes significantly demonstrated EIS method performs an excellent response to corrosion analysis of coating upon the rebar. Beside, in harsh media the two parts of isocyanide-acrylic coating with a surface resistance approximately 7.3 GΩ.cm2 shows the best manner

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