Vertical impedance measurements provide significant quantitative information about the ability of concrete cover to slow the penetration of chloride ions that can corrode steel reinforcement in a bridge deck. The primary limitations preventing the widespread adoption of vertical impedance for assessment of concrete bridge decks are (1) the necessity to have a direct electrical connection to the embedded steel reinforcement and (2) the low speeds of data acquisition. This work presents solutions to both limitations. A method using a large-area electrode as a reference electrode for vertical impedance testing is validated using both simulations and measurements in the field.
Vertical impedance measurements of concrete bridge deck cover condition without a direct electrical connection to the reinforcing steel
Brian A. Mazzeo, Jared Baxter, Jeffrey Barton, W. Spencer Guthrie; Vertical impedance measurements of concrete bridge deck cover condition without a direct electrical connection to the reinforcing steel. AIP Conf. Proc. 16 February 2017; 1806 (1): 080004. https://doi.org/10.1063/1.4974629
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