Effects of Hydrogen Evolution During ECE on the Bond Strength between Steel and Concrete

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Abstract:

Electrochemical Chloride Extraction (ECE) is a new method to halt the corrosion of steel in concrete contaminated by chloride. The bond strength between steel and concrete with and without ECE were tested through steel pull-out test, and the effects of current density and total charge passed during ECE on it were analyzed. A demo device was designed to analyze the hydrogen evolution during ECE by dividing the cathode reactions and anode reactions into two sealed bottles. The relation between hydrogen content and electrons passed in the circuit and the adverse effects of the hydrogen on steel reinforced concrete was conducted. Through drilling appropriate number of holes from concrete surface into the steel, some hydrogen can be released and its adverse effects can be mitigated in a certain degree.

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Periodical:

Advanced Materials Research (Volumes 602-604)

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952-956

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December 2012

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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