Electrochemical impedance spectroscopy (EIS), polarization resistance, and polarization decay measurement techniques were used to analyze uncoated steel reinforcing rods encased in concrete and exposed to saltwater. A nested equivalent circuit containing a Warburg impedance was utilized to analyze the results. When rust is present on the steel, the Warburg impedance dominated the impedance response.

Subject
Circuits, Steel structures, Electrochemical impedance spectroscopy, Perturbation method, Impedance, Interfaces, Electrochemical data, Steel, Elements, Polarization resistance, Polarization decay, Concrete, Electrode potential
Keywords:
Corrosion, steel, reinforced concrete, electrochemical impedance spectroscopy, EIS, polarization decay, equivalent circuit, Warburg impedance
© 1996 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
1996
Association for Materials Protection and Performance (AMPP)
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