A series of new post-tensioned concrete viaducts of the Frejus Highway, Italy, have been constructed with incorporated cathodic protection systems to prevent chloride contamination of the concrete and corrosion of reinforcements. The paper illustrates the computerized data gathering and monitoring system installed, and the criteria adopted to evaluate and control the cathodic protection conditions as well as to avoid overprotection of the post-tensioned tendons. Operating data gathered during the commissioning phase of the CP systems are reported and discussed.

Subject
Cathodes, Steel structures, Steel reinforcement, Anode potential, Voltage, Cathodic protection, Cathodic potential, Rebar, Reference electrodes, Free corrosion potential, Steel, Concrete, Anodes
Keywords:
Cathodic protection, reinforced concrete, post-tensioned concrete, overprotection, monitoring
© 1994 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).
1994
Association for Materials Protection and Performance (AMPP)
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