Sag-resistant gypsum board containing coal fly ash and method for making same
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United States of America Patent
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-
Sep 6, 1983
Grant Date -
N/A
app pub date -
Mar 13, 1980
filing date -
Jan 10, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A gypsum board consisting essentially of a monolithic cellular core of set gypsum and a fiberous cover sheet encasement provided with improved properties by the gypsum core having incorporated therein coal fly ash in an amount of about 1-20% by weight of stucco in the gypsum slurry used in forming the board and method of producing the board are disclosed.
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Cited Art Landscape
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