We used to use water glass to preserve eggs many years ago before we had
refrigeration. They stay fresh for up to a year, amazingly.
It is also refractory, and is added to fireclay to make air-setting
firecement. Potters use it as a deflocculant to keep clay particles in
suspension when they slip cast into plaster molds.
Unfortunately, it is water soluble, so wouldn't make a good concrete
floor sealer.
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Norbert Senf email: mheat@mha-net.org
Masonry Stove Builders mheat@hookup.net
RR 5, Shawville website: http://mha-net.org/msb
Quebec J0X 2Y0 fax: 819.647.6082
voice: 819.647.5092
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