| abstract |
The provided is a building material with a higher specific gravity and / or radioactive ray-shielding function while maintaining a workability equivalent to that of a conventional gypsum board. It refers to a gypsum-based building material manufactured by adding water to a composition in which a base material is a combination of hydraulic gypsum and one or two or more dry-curing calcium carbonate or calcium hydroxide or synthetic resin emulsions, and an inorganic filler with a high specific gravity is combined thereto so that the reaction and adjustment or drying and adjustment is performed; wherein the composition is 100 parts by weight of at least one kind or emulsions of two or more base materials Calcium sulphate, calcium carbonate, calcium hydroxide and organic synthetic resin, and 50 - 3000 parts by weight, at least one species or with an actual specific gravity of 3.5 - 6.0. The group consisting of two or more types of inorganic fillers is the group consisting of barium chloride, zinc oxide, aluminum oxide, titanium oxide, barium oxide, strontium carbonate, barium carbonate and barium sulfate. |