The deterioration of steel reinforced concrete due to reinforcing bar corrosion is recognized as a major technical problem within the State of Florida and nationwide. Usually this mode of failure is recognized in the final stages when surface cracking and spalling of the concrete occurs. The purpose of this study is to extend work previously reported on a nondestructive monitoring technique to detect, characterize and locate corrosion induced structural damage. Acoustic emission technology is used to monitor and characterize the deterioration process in a series of controlled laboratory tests. By comparing measured acoustic emission characteristics including counts and amplitude distributions with physical examination of test specimens at various phases of corrosion induced damage a relation between the observed damage and the attendant acoustic emission is developed. The study illustrates the sensitivity of the method to the ongoing deterioration process and explores its use as a corrosion damage monitoring technique. Various aspects of the experimented results are discussed.

Subject
Steel structures, Rebar, Waves, Corrosion cracking, Corrosion detection, Stress cracking, Acoustic emission, Corrosion products, Characterization tests, Steel, Deterioration, Concrete, Test specimen
© 1983 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).
1983
Association for Materials Protection and Performance (AMPP)
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