M. Keddam et al., AN EQUIVALENT ELECTRICAL CIRCUIT OF MACROCELL ACTIVITY IN FACING ELECTRODES EMBEDDED IN CEMENT MORTAR, Corrosion science, 36(7), 1994, pp. 1155-1166
An equivalent electrical circuit has been tentatively formulated in or
der to simulate the macrocell corrosion behaviour of concrete rebars p
laced in parallel. The measurements have been made on mortar specimens
by means of EIS. The results have been obtained from every electrode
at their open circuit potential and from the two electrodes connected
(macrocell formation). Since this procedure is not completely correct,
an improvement has been attempted by polarizing both rebars to the ma
crocell potential. The addition in parallel of these data has been com
pared to the data for the macrocell couple, finding an almost perfect
fitting.