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Bags of portland cement wrapped and stacked on a pallet. Blue Circle Southern Cement works near Berrima, New South Wales, Australia.. Portland cement is the most common type of cement in general use around the world as a basic ingredient of concrete, mortar, stucco, and non-specialty grout.
The resulting hard substance, called 'clinker', is then ground with a small amount of gypsum (CaSO 4 ·2H 2 O) into a powder to make ordinary Portland cement, the most commonly used type of cement (often referred to as OPC). Portland cement is a basic ingredient of concrete, mortar, and most non-specialty grout. The most common use for Portland ...
CalPortland Company, or simply CalPortland, is an American corporation that produces cement and other building materials.It was founded in 1891 and claims to be the largest such company in the Western United States. [1]
Blue Circle Industries was a British public company manufacturing cement. [1] It was founded in 1900 as the Associated Portland Cement Manufacturers Ltd. through the fusion of 24 cement works, mostly around on the Thames and Medway estuaries, together having around a 70% market share of the British cement market.
The Edison Portland Cement Company was financially struggling until a new contract was won in 1922. [4] Production began on the original Yankee Stadium on May 5, 1922, and was completed in just 284 working days. [8] [9] Built in the New York City borough of the Bronx, the stadium was home to the New York Yankees until 2008. During the course of ...
Portland Cement Works Precinct is a heritage-listed former cement works and limestone quarries and now disused industrial site at Williwa Street, Portland, City of Lithgow, New South Wales, Australia. It was designed and built in various stages from 1890 to 2003. It is also known as Portland Cement Group and Commonwealth Portland Cement Company ...
Portland cement is usually made from cheap, quarried raw materials, and these usually contain substantial amounts of Cr, Mn and Fe. For example, limestones used in cement manufacture usually contain 0.3-1% Fe 2 O 3, whereas levels below 0.1% are sought in limestones for white manufacture. Typical clays used in gray cement rawmix may contain 5 ...
In the early 20th century, Atlas Portland Cement Company produced eight million barrels for the construction of the Panama Canal (1903-1914); its product was the majority of cement used on that project. [1] For the construction of the Singer Building in New York City, 22,600 barrels of cement were used.