Much of the deterioration of concrete structures can be attributed to chloride contamination. Rapid electrochemical methods have been developed to remove water soluble chlorides which cause corrosion.

Electrochemical Chloride Extraction (ECE) removes the cause of the corrosion and leaves the concrete in a passive and stable condition. ECE has been applied to all types of concrete structures, including bridge decks and substructure elements, parking structures, and other concrete building elements.

This paper describes the electrochemical treatment methods and presents results from some of the field installations completed in North America to date. Based on an interpretation of the data available, it is hypothesized that shorter duration treatments may be sufficient to provide long term passivity.

Subject
Electrochemical equivalent, Steel structures, Chloride extraction, Test methods, Corrosion currents, Rebar, Chloride ions, Slabs, Transportation, Chlorides, Corrosion potential, Concrete, Anodes
Keywords:
Electrochemical Chloride Extraction, ECE, Reinforcing Steel Corrosion, Concrete Restoration
© 1998 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).
1998
Association for Materials Protection and Performance (AMPP)
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