Abstract
This paper addresses the first phase in developing a numerical model for polarization distribution prediction of the rebar- anode system in concrete reinforced slabs with residual chloride contamination, where sacrificial point anodes were embedded in the concrete patch repair area. The modeling approach was developed to characterize the performance of this system under two application scenarios: one with part of the rebar assembly in the active condition and the other with an all-passive assembly. The model results and experimental finding in > 1 year old concrete slabs are compared. Results could be used for determine the anode operating potentials that may be achieved with a specific anode placement spacing for highway applications.
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