Lightweight gypsum products and methods of making same

Details Lightweight gypsum products and methods of making same Lightweight gypsum products and methods of making same

1979-07-30

1980-12-09

Van Balen, William J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

106 86, 106109, 106DIG1, 156 43, 428314, 428402, 428538, B32B 1308, B32B 518, C04B 3102

Patent

active

042385466

ABSTRACT:
Disclosed is a method of making lightweight gypsum products wherein expanded substantially monocellular volcanic ash having a loose bulk density of about 0.05 to about 15 pounds per cubic foot is added to calcined gypsum and water to form a slurry. The hydrated gypsum product formed has a bulk density of about 24 to about 45 pounds per cubic foot.

REFERENCES:
patent: 1655718 (1928-01-01), Weiss et al.
patent: 1800024 (1931-04-01), Marczinczek
patent: 2501699 (1950-03-01), Stecker
patent: 2803575 (1957-08-01), Riddell et al.

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