CEMENT PRODUCTION – The Handbook of Texas Online – Texas State Historical Association (TSHA)

Certain regions of Texas, particularly where the Edwards and other liOur Companynes outcrop, are ideal for cement production. Iron oxide, also required for cement production, is found in iron-ore deposits in East Texas.

Cement – Wikipedia

Non-hydraulic cements ( eg gypsum plaster) must be kept dry in order to retain their strength. The most important use of cement is the production of mortar and concrete—the bonding of natural or artificial aggregates to form a strong building material that is durable in the face of normal environmental effects.

Concrete Technology and Construction – Cement Basics – Portland Cement Association (PCA)

The calcium-silicate-hydrate (C-S-H) gel is the most important cementing component of concrete. Some of the many aspects of portland cement production in which microscopy can play an analytical and quality-control role include. Gypsum and other sulfates.

White Hydrocal (Gypsum Cement) 50 lbs. – Rigid Mold Making Compounds – SCULPTING & MOLDING – The Monster Makers

A good selection for decreasing production time on masks. Also works well for quick mother molds. (Please note: This product is not for lifecasting of body parts.) WARNING This product is for making molds of clay and industrial patterns only.

Sulfate attack in concrete

For more on sulfates in cement, see also the page on cement variability for how different forms of sulfate including clinker sulfate and gypsum can affect cement performance. Examples include the use of sulfate-rich aggregate, excess of added gypsum in the cement or contamination.

theNAT – SDNHM – Gypsum

As a building material, it's used in plaster, plaster of Paris, wallboard, cement, and ceramic tiles. In this region, gypsum is mined and processed in a major production plant, located in the aptly named Plaster City between Ocotillo and El Centro. In agriculture, it's used as an amendment to neutralize alkaline soil.

US Environmental Protection Agency – Cement Manufacturing – Sector Information – Sector-Based Information and Resources – US EPA

California, Texas, Pennsylvania, Florida, and Alabama are the five leading cement-producing states and accounted for about 48 percent of recent US production.

Encyclopedia of Earth – Gypsum

There is presently no substitute for gypsum in the production of Portland cement. The states producing the most gypsum are Oklahoma, Iowa, Nevada, Texas, and California. Together, these states account for about two-thirds of the United States' annual production of gypsum.

Housing Zone – Gypsum prices likely to rise in the next year

Gypsum production depends heavily on construction industries. A further 5 percent is used as an additive in cement production. Approximately 90 percent of gypsum is used in the manufacture of wallboard for residential and non-residential building applications.

A History of Cement

Annual global production of concrete hovers around 5 billion cubic yards, a volume approximated by yearly cement production levels of about 1.25 billion tons.

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