Process for the manufacture of construction materials
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United States of America Patent
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Aug 4, 1998
Grant Date -
N/A
app pub date -
Oct 15, 1996
filing date -
May 13, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process in which the conventional sulfate components in an aerated concrete mixture, such as gypsum, semihydrate or anhydrite, are replaced at least in part by calcium aluminum sulfates and/or calcium aluminate sulfate hydrates. As a result, agglomeration of the lime, retardation of the lime hydration, and aftergrowth of the cut aerated concrete cakes are reduced or even ruled out. In addition, the number of molds used can be reduced with the process in accordance with the invention, whereby the use of one single mold is achievable.
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