| 摘要 |
PROBLEM TO BE SOLVED: To provide a corrosion protection method which can easily and stead ily protect corrosion of metallic materials such as reinforcement, etc., in a concrete structural body. SOLUTION: The cement admixture material and more than one kind of heterocyclic ring compounds containing 5- or 6-membered ring forming a carbonyl group in which a ring structure is composed of plural nitrogen atoms and plural carbon atoms, among them more than one carbon atoms and adjacent nitrogen atom are in resonance, are mixed. After that, this admixture is mixed and kneaded, obtained admixture is placed. This is the corrosion protection method for the metallic material in the forming concrete, mortal or cement past. This method is that more than one kind of heterocyclic compounds are dissolved in the water or organic solvent, the obtained solution is applied, or sprayed on the existing concrete, mortar or cement past in which the metallic material is arranged, or injected the solution into the concrete structural body through the broken part so as to penetrate to the surface of metallic material. Thereby, the surface of internal metallic material is protected from corrosion. For the heterocyclic compound, urasil, 5-aminouracil, uramil, uric acid, etc., are preferable. |
