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Portland cement information


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Bags of portland cement wrapped and stacked on a pallet.
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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. It was developed from other types of hydraulic lime in England in the early 19th century by Joseph Aspdin, and is usually made from limestone. It is a fine powder, produced by heating limestone and clay minerals in a kiln to form clinker, grinding the clinker, and adding 2 to 3 percent of gypsum. Several types of portland cement are available. The most common, called ordinary portland cement (OPC), is grey, but white portland cement is also available. Its name is derived from its resemblance to Portland stone which is quarried on the Isle of Portland in Dorset, England. It was named by Joseph Aspdin who obtained a patent for it in 1824. His son William Aspdin is regarded as the inventor of "modern" portland cement due to his developments in the 1840s.[1]

The low cost and widespread availability of the limestone, shales, and other naturally occurring materials used in portland cement make it a relatively cheap building material. Its most common use is in the production of concrete, a composite material consisting of aggregate (gravel and sand), cement, and water.

  1. ^ Cite error: The named reference William Aspdin was invoked but never defined (see the help page).

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company manufacturing cement. It was founded in 1900 as the Associated Portland Cement Manufacturers Ltd through the fusion of 24 cement works, mostly around...

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common to ancient Egyptian construction. With the introduction of Portland cement during the 19th century, the use of lime mortar in new constructions...

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different from those of silica fume. The first testing of silica fume in Portland-cement-based concretes was carried out in 1952. The biggest drawback to exploring...

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composition of: Clinker and non-hydrated Portland cement, and; Hardened cement pastes obtained after hydration and cement setting. Four main phases are present...

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Stucco

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Typically its color was gray, from the innate color of most Portland cement, but white Portland cement is also used. Today's stucco manufacturers offer a very...

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Pozzolana

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silicate hydrate (CSH) Cement Cement chemist notation Concrete Energetically modified cement (EMC) Fly ash Metakaolin Portland cement Pozzolan Pozzolanic...

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2023, Cimerwa Cement Limited operated as a 51 percent subsidiary of Pretoria Portland Cement Company (PPC Limited), a South African cement-manufacturing...

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Marl

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conditioner and neutralizing agent for acid soil and in the manufacture of Portland cement. Because some marls have a very low permeability, they have been exploited...

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the combination of finely dehydrated ground Portland cement layer and a coarser layer of sand and cement. The pigment layer is hydraulically pressed into...

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