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Journal of Engineering
Volume 2014 (2014), Article ID 925410, 11 pages
http://dx.doi.org/10.1155/2014/925410
Research Article

Effect of Water-Cement Ratio on the Macrocell Polarization Behavior of Reinforcing Steel

Concrete laboratory, Department of Civil Engineering, Kyushu Institute of Technology, Kitakyushu-shi 804-8550, Japan

Received 11 August 2014; Accepted 19 October 2014; Published 16 November 2014

Academic Editor: Yongping Chen

Copyright © 2014 Zhonglu Cao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The effect of water-cement ratio on the macrocell polarization behavior of reinforcing steel embedded in cement mortars was investigated by comparing and analyzing the macrocell polarization ratios and slopes of anodic and cathodic steels. Based on the experimental results, the relationship between macrocell potential difference and macrocell current density was also analyzed, and the mechanism of macrocell polarization affected by water-cement ratio was proposed. The results indicated that the water-cement ratios had little impact on the macrocell polarization ratios of cathode and anode. The lower water-cement ratio could reduce the macrocell current by decreasing the macrocell potential difference and increasing the macrocell polarization resistance of the cathode and anode.