About five years ago, four different cathodic protection (CP) systems were installed and evaluated in the reinforced concrete tie beams and footings of four bents on the Queen Isabella Causeway. This causeway links South Padre Island to the mainland of Texas. The CP systems included three impressed current systems; sprayed zinc, sprayed titanium, and titanium mesh with overlay as well as a sacrificial system; sprayed zinc. About a year later, another sacrificial CP system, thermally sprayed Aluminum-Zinc-Indium, was also installed and evaluated. This paper is an update on the performance of those systems.

Subject
Zinc rich coatings, Galvanic anodes, Titanium mesh, Cathodic protection, Zinc anodes, Aluminum zinc indium alloys, Anode surfaces, Rectifiers, Titanium, Impressed current, Zinc, Bridges, Concrete
Keywords:
impressed current, sacrificial CP, zinc, titanium, aluminum-zinc-indium
© 2004 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).
2004
Association for Materials Protection and Performance (AMPP)
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