Reinforced concrete subjected to chloride exposures can have severe corrosion occurring in discreet locations. A typical repair involves removing the distressed concrete, replacing reinforcing bar if necessary and filling the hole with a cementitious repair material that is often concrete. Steel in the repair location often becomes a cathode to the surrounding steel resulting in corrosion of the bars in the concrete near the patch. One means to mitigate the acceleration of corrosion in the areas near the patch is to embed sacrificial anodes into the patch. These anodes provide corrosion control to the steel near the patch as well as to the steel in the patch. This paper describes a new test protocol that can ascertain the effectiveness of embedded sacrificial anodes in mitigating corrosion on steel outside of the repair patch.

Subject
Concrete repair, Test methods, Materials, Galvanic anodes, Rebar, Reclamation, Slabs, Repair, Macrocell current, Steel, Chlorides, Corrosion potential, Concrete
Keywords:
Sacrificial anode, concrete, concrete repair, ring corrosion
© 2016 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).
2016
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.