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51313-02840-Modeling Performance of Galvanic Point Anodes for CP of Reinforcing Steel in Concrete Repairs

Product Number: 51313-02840-SG
ISBN: 02840 2013 CP
Author: Margareth Dugarte
Publication Date: 2013
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$20.00
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Modeling Performance of Galvanic Point Anodes for Cathodic Prevention of Reinforcing Steel in Concrete Repairs

Margareth Dugarte* and Alberto Sagues**
*Universidad del Norte
**University of South Florida

This paper addresses projecting the performance of point anodes for patch repairs applications as function of service parameters and anode aging. Input data from a concurrent experimental test program are presented as well. Modeling of a generic patch configuration was implemented by a simplified finite differences method. The model calculates the throwing distance that could be achieved by a given number of anodes per unit perimeter of the patch concrete thickness concrete resistivity amount of steel and amount of polarization needed for cathodic prevention. The model projections and aging data suggest that anode performance in likely application scenarios may derate soon even if a relatively optimistic 100 mV corrosion prevention criterion were assumed. 3D rebar cases were included to support the model results. The effect of adopting less conservative criteria proposed in the literature is presented as well and the need for supporting information is discussed.
 

Modeling Performance of Galvanic Point Anodes for Cathodic Prevention of Reinforcing Steel in Concrete Repairs

Margareth Dugarte* and Alberto Sagues**
*Universidad del Norte
**University of South Florida

This paper addresses projecting the performance of point anodes for patch repairs applications as function of service parameters and anode aging. Input data from a concurrent experimental test program are presented as well. Modeling of a generic patch configuration was implemented by a simplified finite differences method. The model calculates the throwing distance that could be achieved by a given number of anodes per unit perimeter of the patch concrete thickness concrete resistivity amount of steel and amount of polarization needed for cathodic prevention. The model projections and aging data suggest that anode performance in likely application scenarios may derate soon even if a relatively optimistic 100 mV corrosion prevention criterion were assumed. 3D rebar cases were included to support the model results. The effect of adopting less conservative criteria proposed in the literature is presented as well and the need for supporting information is discussed.
 

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08306 Long-Term Protection of Reinforced Concrete by Galvanic Cathodic Protection, Test Results

Product Number: 51300-08306-SG
ISBN: 08306 2008 CP
Author: John E. (Jack) Bennett and William T. McCord
Publication Date: 2008
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