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Portland cement had been imported into the United States from England and Germany, and in the 1870s and 1880s, it was being produced by Eagle Portland cement near Kalamazoo, Michigan. In 1875, the first portland cement was produced in the Coplay Cement Company Kilns under the direction of David O. Saylor in Coplay, Pennsylvania . [ 11 ]
Portland blast-furnace slag cement, or blast furnace cement (ASTM C595 and EN 197-1 nomenclature respectively), contains up to 95% ground granulated blast furnace slag, with the rest Portland clinker and a little gypsum. All compositions produce high ultimate strength, but as slag content is increased, early strength is reduced, while sulfate ...
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 ...
Joseph Aspdin (25 December 1778 – 20 March 1855) was an English bricklayer, businessman, inventor, and stonemason who obtained the patent for Portland cement on 21 October 1824. Plaque commemorating Joseph Aspdin in the yard where he lived.
William Aspdin (23 September 1815 – 11 April 1864) was an English cement manufacturer, and a pioneer of the Portland cement industry. [1] He is considered the inventor of "modern" Portland cement. [2] [3]: 184, 191 He has also been termed "an incorrigible liar and swindler". [3]: 191
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.
Portland cement is the most common type of cement in general usage. It is a basic ingredient of concrete, mortar , and many plasters . [ 43 ] It consists of a mixture of calcium silicates ( alite , belite ), aluminates and ferrites —compounds, which will react with water.
Portland cement-based grouts include different varieties depending on the particle size of the ground clinker used to make the cement, with a standard size around 15 microns, microfine from 6–10 microns, and ultrafine below 5 microns. Finer particle sizes let the grout penetrate more deeply into a fissure.