From:
<shawnpower@zzzzzzzzzzzzzzz>
Date:
Tue, 22 Nov 2005 20:16:32 -0400
Subject:
Grouts
A simple question with regards to the use of commercially made grout
products during restoration work on built heritage, engineers and architects
sometimes specify the use of grouts the fill voids/cavitiys , I have noticed
that 2-3 yaers after theses projects are complete, that there seems to be
alot of salts migrating not only through the joints, but right through the
stone itself, do these grouts contain that much salts/minerals ?, or is it
that when the grout was mixed,it was mixed with too much water and the water
that is evaporating out of the wall cavity is carrying these salts and
minerals to the face of the wall ?, if too much water is the case, and the
grout was poured that thin, would'nt that basically render it useless?, what
would a good grout recipe be ?, my first thought would be a high lime, high
sand, low cement mix, what do you all think?, I have heard of the use of
fly ash in grouts as well, for filling smaller voids and cracks, any
feedback will be appreceiated.
Shawn
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