The transportation systems in North America and around the world often consist of concrete structures. Traditionally, these have been reinforced with carbon steel. Corrosion of metallic reinforcement is generally caused by loss of passivity associated with the ingression of chloride ions into the concrete and/or carbonation. Alternative metallic reinforcements include stainless steel, stainless steel clad, and newly developed alloys. This paper compares the corrosion behavior of several different types of corrosion resistant metallic reinforcement using short-term laboratory tests and long-term outdoor reinforced concrete exposures. Data pertaining to the effects of water-cement ratio, presence of simulated concrete cracks, and reinforcement surface condition are also presented and discussed.

Subject
Chloride threshold, Materials, Stainless alloys, Current densities, Electric potential, Carbon steel, Reinforced concrete, Corrosion resistance, Stainless steel, Chlorides, Polarization resistance, Concrete, Reinforcement
Keywords:
Concrete, reinforcement, stainless steel, clad
© 2005 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).
2005
Association for Materials Protection and Performance (AMPP)
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