Instrumentation has been developed for rapid data acquisition and processing of the potential transient response to a galvanostatic pulse. This has been designed to be employed as a site method for the corrosion evaluation of steel reinforcement in concrete structures. Details of the technique are presented, together with experimental results from electronic circuits, test solutions, and specimens of steel in concrete. Results obtained were comparable with those from AC impedance tests, but the galvanostatic pulse technique gave better resolution of time constants, and the measurement time required was much shorter.

Subject
Electric current, Circuits, Steel structures, Perturbation method, Corrosion rate, Circuit potentials, Impedance, Constants, Impedance measurements, Steel, Linear polarization resistance, Electrodes, Concrete
Keywords:
concrete, steel reinforcement corrosion, galvanostatic pulse, potential transient, site measurement, data acquisition, data processing
© 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)
You do not currently have access to this content.