As part of a study of corrosion of rebar for reinforced concrete culvert applications, samples of concrete with imbedded steel were exposed for times exceeding 7200h to various waters of controlled pH (5.5 to 8.5) and electrical resistivity (300 to 5000 0 cm, using sodium chloride additions). The evolution of the deterioration of the rebar was monitored by periodic electrode potential, linear polarization, and AC impedance measurements. The measurements to date show corrosion initiated in environments with low electrical resistivity but not in those of high electrical resistivity, regardless of the pH. The results from the different corrosion testing techniques are compared and their applicability evaluated.

Subject
Corrosion rate, Rebar, Impedance, Open circuits, Linear polarization, Liquids, Test environments, Electrical resistivity, Steel, Corrosion resistance, Corrosion potential, Concrete, Electrode potential
© 1987 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).
1987
Association for Materials Protection and Performance (AMPP)
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