Difficulties in Electrochemical Measurement of Very Low Corrosion Rates. The Case of Concrete Reinforcements

González, J. A.; Andrade Perdrix, Carmen; Molina, A.; Escudero Rincón, María Lorenza; Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]

Difficulties in Electrochemical Measurement of Very Low Corrosion Rates. The Case of Concrete Reinforcements | Dificultades en la medida electroquímica de velocidades de corrosión muy pequeñas. Caso de las armaduras del hormigón

1984

González, J. A. | Andrade Perdrix, Carmen | Molina, A. | Escudero Rincón, María Lorenza | Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]

An attempt is made in this report to respond to the main concerns of anyone who starts becoming familiarized with the polarization resistance method: time that should elapse before data collecting when a potential or intensity step is applied and the suitable polarization rate if potentiometric methods are used. The advantages of operating with controlled potential instead of intensity when the corrosion intensity is very high, is analyzed. This is shown for the case of real reinforcement/concrete in which the stationary state can be reached in times very much under one minute as opposed to the widely spread opinion that waiting times of many minutes or even hours, are required.

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