METHOD FOR PREVENTING CORROSION OF IRON BAR IN CONCRETE

PROBLEM TO BE SOLVED: To provide a method for preventing the corrosion of iron bars in concrete, which can stably generate a large electric current by keeping anodes always in an activated state to thereby overcome the problem that the generated current in a corrosion prevention method using a conve...

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Bibliographische Detailangaben
Hauptverfasser:	OTANI SHUNSUKE, SONE YUKIHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25 NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for preventing the corrosion of iron bars in concrete, which can stably generate a large electric current by keeping anodes always in an activated state to thereby overcome the problem that the generated current in a corrosion prevention method using a conventional anode material is small, and especially can prevent re-degradation due to macrocell corrosion arising from patch repair.SOLUTION: In a method for preventing the corrosion of iron bars in concrete comprising embedding anode materials A in a concrete opening 11 where iron bars are exposed, making electrical connection between each anode material A and an iron bar 12, and filling the opening with a patch repair material, the anode material A used is an anode material prepared by covering the surface of an arbitrarily shaped aluminum alloy or zinc alloy 1 with a gel layer 4 containing a chloride, attaching a cloth material 5 containing a chloride on the gel layer 4, and coating its surface with a cementitious material 6.