Twelve, 60 cm by 150 cm by 15cm (2 ft. by 5 ft by 6 in.) reinforced concrete slabs were fabricated in 1980 using non-specification epoxy coated reinforcing steel and black (uncoated) steel. The slabs were placed in two lifts: the bottom lift containing a bottom mat of reinforcing steel and chloride free concrete; and the top lift containing the top mat rebars and concrete containing 6.8 kg/m3 (15.0 lbs/yd3) of chloride admixed as NaCl. All electrical connections between reinforcing mats were made exterior to the slabs, thus permitting the monitoring of corrosion current flow. A worst case research design involving poor quality concrete, nonspecification epoxy-coated rebar and 100 percent coupling between rebar mats was used. Findings of the study indicate that nonspecification epoxy-coated reinforcing steel provide more than an order of magnitude reduction in corrosion rate; and thus should provide long term protection against corrosion-induced damage on properly engineered and constructed structures in severe salt environments.

Subject
Holidays, Black steel, Corrosion currents, Corrosion rate, Rebar, Wiring, Slabs, Steel, Corrosion resistance, Epoxies, Bridges, Damage, Concrete
© 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)
You do not currently have access to this content.