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http://dx.doi.org/10.14190/JRCR.2017.5.2.152

Improvement of Seawater Corrosion Resistance of Concrete Reinforcing Steel Using by Conductive Photocatalyst  

Bae, Geun-Guk (Haeundae-gu Office Economy Promotion Division)
Bae, Geun-Woo (MARINE General Construction)
Ahn, Yong-Sik (Deprt. of Materials Science & Engineering, Pukyong National University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.5, no.2, 2017 , pp. 152-159 More about this Journal
Abstract
In marine environment, the durability of concrete and reinforcing steel is known to be deteriorate by the permeation of chloride ion into concrete. In this study the conductive photocatalyst was used to improve the seawater corrosion resistance of the concrete and steel. Mortar and concrete samples were prepared by mixing with various amounts of conductive active carbon and photocatalytic powder($TiO_2$). The compressive strength of concrete was decreased with the increase of the amount of conductive carbon powders. The samples containing conductive carbon and photocatalytic powders showed the superior seawater corrosion resistance compared with the ordinary sample, which was verified by XRF analysis showing the concentration of chloride ion($Cl^-$) of mortars and concretes. The inhibitive effect of photocatalyst against chloride attack was discussed with the diffusion coefficient of chloride ion into mortar and concrete.
Keywords
Seawater corrosion; Conductive concrete; Photocatalyst; Corrosion test;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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