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USG has a large gypsum plant located 17 miles (27 km) west of El Centro, California, along highway Interstate 8, at Plaster City. [25] The Plaster City location makes Sheetrock brand gypsum panels. The gypsum is mined from a quarry located 20 miles (32 km) to the north, in the Fish Creek Mountains of Imperial County. The quarry is estimated to ...
It is a mixture of gypsum plaster, Portland cement, and sand. [1] Gypsum concrete is sometimes called gypcrete by construction professionals, [2] [3] as a generic name in common usage (but not in law), but that is an alteration of Gyp-Crete, a Maxxon trademark for its brand of gypsum concrete. [4] Other common brands of gypsum concrete include ...
Oldcastle Materials Inc. is a supplier of asphalt, concrete, and other building materials, and also offers construction and paving services. The Atlanta-based company is a subsidiary of CRH plc, a publicly traded international group of diversified building materials businesses, [2] [3] and has approximately 18,000 employees at 1,200 locations, as of March 2018.
The company was founded in 1963 as a division of Centex Construction Company. Between April 1994 and January 30, 2004, the company was known as Centex Construction Products, Inc. [1] On January 30, 2004, Centex distributed its shares in the company to its shareholders and the company was renamed Eagle Materials Inc. [2] [3]
Hydrocal is a US Gypsum product composed mainly of plaster of Paris and a small amount of Portland cement. Hydrocal, like its similar formulas Hydrostone, Ultracal, Duracal and others are all used for casting sculptures and other art objects as well as molds.
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A phosphogypsum stack or "gyp stack", [6] located near Fort Meade, Florida. These contain the waste byproducts of the phosphate fertilizer industry. The United States Environmental Protection Agency (EPA) has banned most applications of phosphogypsum having a 226 Ra concentration of greater than 10 pico curie/gram (0.4 Bq/g) [7] in 1990. [3]
Gypsum concrete is a building material used as a floor underlay [45] used in wood-frame and concrete construction for fire ratings, [45] sound reduction, [45] radiant heating, [46] and floor leveling. It is a mixture of gypsum, Portland cement, and sand. [45] One of its advantages is the lightweight nature.