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not prove to be a satisfactory substitute because it required 2
weeks to cure fully and it could not withstand heavy use.
Accordingly, Vanalco decided to replace sections of the
brick layer with Fondag cement.6 Fondag cement is more pliable
than regular cement, and it sets much more quickly and is easier
to use. Moreover, like brick, Fondag cement acts as an
insulator.
In comparison to brick, however, Fondag cement is a much
superior material for an insulating floor covering. For
instance, Fondag cement floors are easier and quicker to repair
than brick floors because as small areas of the Fondag cement
floor wear down, the small areas can be made to match the level
of the less worn unrepaired surrounding floor surface without
having to replace a large area as is necessary with brick floors.
In addition, the Fondag cement floor can be made more level than
the brick floor, which improves safety and allows the use of
labor-saving mechanical cleaning equipment. Most importantly,
Fondag cement becomes electrically nonconductive in 24 hours
compared to 7 or more days for brick.
Vanalco removed and replaced the bricks with Fondag cement
6Fondag cement contains approximately 38 to 40 percent
alumina, 37 to 39 percent calcium oxide, 15 to 18 percent ferrous
oxide and ferric oxide, and 3 to 5 percent silicon dioxide.
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Last modified: May 25, 2011