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Considerations on reproducibility of potential and corrosion rate measurements in reinforced concrete
This communication analyses information supplied by the electrochemical parameters related to rebar corrosion in reinforced concrete structures (RCS). Corrosion potential and corrosion current density are determined for different sets of conditions. Tests are performed to gather data on conflictive aspects of the two electrochemical parameters, with regard to evaluating the results of RCS inspections. Consideration is made of the limitations of potential measurements if not accompanied by complementary indications such as concrete resistivity, rebar surface area involved in the measurements, or the instrumentally determined corrosion current. The capacity of galvanostatic pulses applied directly on large RCS to offer a reliable guide to corrosion rate of steel reinforcements is discussed. © 2004 Elsevier Ltd. All rights reserved.
Corrosion potential; Corrosion rate; Galvanostatic pulses; Inspection; Non-destructive tests; Reinforced concrete structures Cathodic protection; Concrete construction; Current density; Data acquisition; Electric conductivity; Concrete resistivity; Galvanostatic pulses; Reinforced concrete structures (RCS); Reinforced concrete; concrete; corrosion; measurement method; reinforced concrete