Abstract
The permeance of coatings applied to the walls of Single Wythe concrete masonry units (CMU) can affect the long term performance of the coating system, especially after multiple repaints. This paper describes the results of a study to determine if the Atlas Cell Test (NACE TM0174/ASTM C868) can be modified to evaluate the performance of individual coating systems based upon permeance. Coating systems with permeance (WVP US perm ratings) from < 10 perms to > 60 perms were used in the research. The goal of the test program is to establish a protocol that can eventually be used to determine the number of times that a given system can be repainted before the reduction in permeance causes concerns with blistering or peeling.
© 2012 Association for Materials Protection and Performance (AMPP). All rights reserved. This work is protected by both domestic and international copyright laws. 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).
2012
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.