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Home  >  Journal list  >  Journal of the Society of Materials Science, Japan  >  Vol.66  No.8 (2017)  >  pp.594-600

Journal of the Society of Materials Science, Japan
<<Previous article Vol.66  No.8 (2017)   pp.594 - 600 Next article>>

Application of Corrosion Rate Analysis Model to Macrocell Formed at Joint in Reinforced Concrete

Tatsuro HATANAKA1), Shinichi MIYAZATO2)
1) Graduate student, Department of Civil and Environmental Engineering, Kanazawa Institute of Technology 2) Department of Civil and Environmental Engineering, Kanazawa Institute of Technology

Many reinforced concrete structures in Japan are aging. A reasonable and durable design by the numerical analysis is necessary to extend the service life of concrete structures. Based on the above background, this paper is applied the macrocell corrosion rate analysis model whom authors proposed to the members with a joint. First the model is constructed. The input data is an anode polarization curve, a cathode polarization curve, a polarization resistance, and an electrical resistance of mortar. On the other hand, the output data is a total corrosion current. Next, an analytical value is compared with the experiment value while using the mortar specimen that imitated the patch repair part. As a result, it can be cleared that the model is appropriate. Finally, the effect of the macrocell countermeasures method with the spray of the silane type surface penetrant on the joint is verified by this model. Thus, it can be confirmed that when the electrical resistance at the joint is large, the corrosion rate becomes low analytically.




Keyword:
Reinforced concrete, Chloride induced corrosion, Macrocell corrosion rate, Analysis model, Joint

Received: January 10, 2017
Published online: August 20, 2017

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