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Subject: whitening of epoxy/polyurethane industrial floor

Date: 08/09/00 at 3:11 PM
Posted by: Hans van Leeuwenstijn
E-mail: future@worldonline.nl
Message Posted:

A thin layer (5 - 10 mm) of sand/epoxy composite is applied on a concrete floor.
The surface is sealed with a clear 2 comp. polyurethan sealing.
Major part of the floor has a dark appearance, on some parts however (were the sealing thickness seems less, on places subject to mechanical wear, and in some places on the more poreus parts of the "stroke" visible from application) part of the surface shows an oblique white appearance.
Can this be due to defects in de adhesion of the polyurethan sealing on the epoxy/sand surface. Delamination should result in visual change due to a
change in light refraction, shouldn't it?

Any ideas on this?
Hans v Leeuwenstijn

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