Two case studies dealing with the deterioration of conventionally reinforced and post-tensioned concrete balconies due to reinforcing steel corrosion are presented. Each case study includes the results of a detailed concrete and corrosion condition evaluation followed by the repair and protection recommendations made. Some of the factors that contributed to the deterioration of the balconies included inadequate concrete cover, presence of excessive chlorides and moisture near the reinforcing steel or cables, marginal concrete quality, lack of sheathing on the cables, poorly sealed post pockets, and cables damaged during the installation of railings. The rehabilitation recommendations ranged from simply repairing cracks and damaged concrete only to concrete repairs followed by installation of a cathodic protection system.

Subject
Steel structures, Materials, Rebar, Tendons, Concrete surfaces, Cables, Slabs, Anchors, Repair, Corrosion protection, Bridges, Chlorides, Concrete
Keywords:
concrete repair, corrosion evaluations, corrosion protection, post-tensioning, reinforced concrete balconies, reinforced concrete structures, reinforcing steel corrosion
© 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)
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