Abstract
The paper discusses the results of potential measurements on concrete reinforcements in presence of stray currents. To eliminate the spurious ohmic drop contribution, the “lateral gradient technique” has been used. This technique, formerly introduced for interfered steel structures, such as buried pipelines, has been investigated for reinforced concrete structures and then proved to be applicable also to the reinforcements, with or without cathodic protection, leading to potential readings not affected by the ohmic drop contribution. The interpretation of field measurements for concrete structures is discussed on the basis of laboratory test results for passive and active steel rebar.
© 1997 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).
1997
Association for Materials Protection and Performance (AMPP)
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