Gypsum cement composition and articles formed thereof
OwnerAlireza Molaei Maneshinventor
Life of this patent
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Abstract
A composition for forming molded mantels, columns and other decorative enhancement to fireplace openings is formed of a mixture of alpha hemihydrate gypsum plaster, cement, filler and milled fiber. By using this composition with water and acrylic binder a mixture is formed which sets and gains strength quickly and is an ideal material for manufacturing architectural and decorative structures. Advantageously, a casted piece can be removed from a mold within two to three hours after casting. The finished product has a desired finish that is similar to a casted gypsum cement, referred to sometimes as a honed finish which can withstand high heat, discoloration and cracking while maintaining suitable strength when exposed to typical temperatures of a fireplace surround in indoor applications.
Claims23
A gypsum cement composition, comprising:
- gypsum 10%-45% by weight;
- cement;
- micronized filler of at least 80 mesh;
- and,
- milled fibre, wherein the total amount of cement and filler combined is at least 50% by weight and less than or equal to 90% by weight, and wherein the amount of cement is at least 10% or more by weight, and wherein the amount of filler is less than or equal to 85% by weight.
A method of forming an object comprising:
- providing a slurry of gypsum 20% to 45%;
- cement;
- micronized filler;
- and, milled fibre into a mould to form a first layer, and after the first layer sets, applying a second layer over the set first layer.
Dependencies are inferred from the claim text.