This paper presents design and operational characteristics of the cathodic protection (CP) system designed to mitigate future corrosion damage to steel reinforcement (rebar) in the concrete floor slab and selected ramps of the parking garage below the MONY twin tower office building in Syracuse, NY. This system was installed during the rehabilitation of this garage and covers 144,800 square feet (13,452 square meter) of the floor slab and some ramp areas. Corrosion due to contamination from deicing salts had caused severe damage to the top mat of steel and the concrete of the cellar floor. The rehabilitation included the removal and replacement of the entire top mat of steel, the installation of the CP system and the placement of a waterproof membrane near the top of the repaired slab. Depolarization testing was completed sixty days and two years after the system was energized. Depolarization recorded after 4 hours is compared to 24-hour depolarization from both data sets.

Subject
Depolarization, Electric current, Test methods, Electrochemical cells, Rebar, Reference electrodes, Slabs, Meshes, Rehabilitation, Steel, Polarization, Concrete, Anodes
Keywords:
steel reinforced concrete, chloride contamination, cathodic protection, expanded Titanium anode mesh, embedded reference electrodes, depolarization, current distribution
© 2004 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).
2004
Association for Materials Protection and Performance (AMPP)
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