Abstract
Material defects in post-tensioned tendons may lead to corrosion development of the steel strand. It was generally accepted that corrosion development occurs in post-tensioned tendons when void spaces develop in the tendon due to the accumulation of grout bleed water and subsequent evaporation and reabsorption into the grout and exposing strand. Recently, post-tensioned tendon failures have been associated with deficient grout in part caused by grout segregation. Repair of void spaces in those deficient tendons alone without addressing the deficient grout may not necessarily mitigate corrosion development. Corrosion development of steel strand with unmitigated bleed water presence in repair grouted post-tensioned tendons is addressed.
Subject
Water,
Materials,
Moisture,
Corrosion currents,
Tendons,
Sulfates,
Corrosion activity,
Grout,
Pores,
Repair,
Macrocell current,
Bleeding,
Steel
© 2013 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).
2013
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.
