- Atlanta GA, US Jeffrey T. Fields - Suwanee GA, US Melisha Gardner - Carrollton AL, US
Assignee:
Georgia-Pacific Gypsum LLC - Atlanta GA
International Classification:
C01F 11/46
Abstract:
Methods of making calcium sulfate whiskers are provided. In one aspect, a method includes autoclaving a slurry of calcium sulfate hemihydrate and water to form calcium sulfate hemihydrate whiskers in water and microwaving the whiskers to dewater them, wherein the microwaving is effective to prevent a majority of the whiskers from reverting to a dihydrate form. In one aspect, a method includes microwaving calcium sulfate hemihydrate whiskers to form anhydrite calcium sulfate whiskers, wherein the microwaving is effective to remove a substantial amount of chemically bound water from the whiskers.
Calcium Sulfate Crystals And Methods For Making The Same
- Atlanta GA, US Jeffrey T. Fields - Suwanee GA, US
Assignee:
Georgia-Pacific Gypsum LLC - Atlanta GA
International Classification:
C01F 11/46
Abstract:
A composition of matter is provided, including anhydrite calcium sulfate whiskers having a mean aspect ratio of at least 30. Another composition of matter is provided, including alpha-derived anhydrite calcium sulfate whiskers. Yet another composition of matter is provided, including fine alpha particle-derived anhydrite calcium sulfate whiskers.
Gypsum Composites Containing Cementitious Materials And Methods
Gypsum composites containing cementitious materials and methods of making the same are provided. Gypsum composites include gypsum and a cementitious material. Methods of making gypsum composites include combining gypsum stucco, water, and a cementitious material to form a slurry, and setting and drying the slurry to form a gypsum composite.
- Atlanta GA, US Jeffrey T. Fields - Suwanee GA, US
Assignee:
Georgia-Pacific Gypsum LLC - Atlanta GA
International Classification:
E04B 1/82
US Classification:
252 62
Abstract:
Building materials include a dampening layer which contains a plaster and a viscoelastic polymer, such as polyvinyl butyral. The dampening layer may also include a barium salt. Methods of making a sound dampening material include providing a plaster mixture. The mixture may include a viscoelastic polymer and/or a barium salt. The plaster mixture is combined with water and/or a viscoelastic polymer dispersion, to form a slurry. The slurry is applied to a surface and set to form a sound dampening layer.
- Atlanta GA, US Jeffrey Thomas Fields - Suwanee GA, US
Assignee:
Georgia-Pacific Gypsum LLC - Atlanta GA
International Classification:
E04B 1/84
US Classification:
252 62, 181294, 427331
Abstract:
Building materials include a dampening layer which contains a plaster and a viscoelastic polymer, such as polyvinyl butyral. The dampening layer may also include a barium salt. Methods of making a sound dampening material include providing a plaster mixture. The mixture may include a viscoelastic polymer and/or a barium salt. The plaster mixture is combined with water and/or a viscoelastic polymer dispersion, to form a slurry. The slurry is applied to a surface and set to form a sound dampening layer.
- Atlanta GA, US Jeffrey Thomas Fields - Suwanee GA, US
Assignee:
Georgia-Pacific Gypsum LLC - Atlanta GA
International Classification:
E04B 1/84
US Classification:
252 62
Abstract:
Building materials include a dampening layer which contains a plaster, and hollow microspheres, such as polymeric microspheres. Methods of making a sound dampening material include providing a plaster mixture. The mixture may include hollow microspheres. The plaster mixture is combined with water to form a slurry. The slurry is applied to a surface so that it sets to form a sound dampening layer. Methods of dampening sound through a structure include disposing a dampening layer on a surface of or within a wall, door, floor, ceiling, roof, or floor/ceiling assembly.
Intelligence agency officials presenting classified information to the president at the White House would feel compelled to say yes to a request from the president to keep information shown to him, said Jeffrey Fields, a former senior advisor in Obamas Defense Department and an analyst at the State
Date: Sep 08, 2022
Category: U.S.
Source: Google
Youtube
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