Concrete Research and Technology
Online ISSN : 2186-2745
Print ISSN : 1340-4733
ISSN-L : 1340-4733
Restoration of Resistance to Freezing and Thawing in Deteriorated Concrete by Electrodeposition Technique
Shunsuke OtaniMasanao TomonYu Watanabe
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2008 Volume 19 Issue 3 Pages 11-20

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Abstract

Two types of concrete specimens containing chloride were prepared to suffer early frost damage. A freezing and thawing test was performed on the specimens, which were then subjected to the electrodeposition technique in an external solution containing deicing salt (sodium or calcium chloride). Electrodeposits appeared to fill the fine cracks caused by frost damage because the relative dynamic modulus of elasticity of concrete specimens was considerably restored after electrodeposition in the calcium chloride solution. The electrodeposition technique was also capable of improving the durability factor of the frost-damaged specimens. However, when the electrodeposition technique was carried out in the sodium chloride solution, the frost-damaged concrete specimens suffered more frost damage.

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