Severe deterioration due to corrosion of reinforcing steel in concrete structures is a source of major concern with respect to the maintenance of a safe and reliable infrastructure. A significant amount of work has been performed over the past 30 years, and the understanding of corrosion of reinforcing steel in concrete has progressed significantly. Although the effect of chloride (Cl−) has been studied extensively, the effect of other environmental variables in combination with the Cl− are not as well understood. In addition, the effect of concrete chemistry on the corrosion behavior of reinforcing steel has not been well characterized. In this paper, the effects of Cl− concentration, temperature, and humidity on the corrosion behavior of a typical reinforcing steel, in a typical concrete mix, were examined. The main effects of the above variables and their interaction were studied using a full factorial three level experimental design along with statistical methods to provide prediction of corrosion rates as a function of Cl− concentration, temperature, and humidity.

Subject
Humidity, Steel surfaces, Corrosion rate, Chloride ion concentration, Predicted corrosion rate, Rebar, Mortar, Corrosion modeling, Steel, Corrosion data, Chlorides, Relative humidity, Concrete
Keywords:
corrosion, concrete, chloride, temperature, humidity, polarization resistance, reinforcing steel, regression model
© 1995 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).
1995
Association for Materials Protection and Performance (AMPP)
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