GBlist: Science lab floor finishes?
John Bower (healthy@bloomington.in.us)
Sat, 22 Mar 1997 16:09:18 -0600
Sodium silicate, also called water glass, is quite non-toxic. I saw a
salesman drink some once (Don't try this at home!!), and it's been used
to harden egg shells. It reacts with the calcium and lime in the
concrete to form a crystaline structure in the surface, so it is
supposedly a permanant sealer. I'm not sure how it would hold up to
student abuse—that's a tall order. You might apply it to colored
concrete to get away from the standard gray.
--
John Bower, The Healthy House Institute
http://www.hhinst.com/ email: healthy@bloomington.in.us
430 N. Sewell Road, Bloomington, IN 47408
Phone/fax 812-332-5073
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