portland cement encyclopedia
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portland cement encyclopedia

Portland cement Britannica

Portland cement, binding material in the form of a finely ground powder, usually gray, that is manufactured by burning and grinding a mixture of limestone and clay or limestone and shale.The inventor Joseph Aspdin, of England, patented the basic process in 1824, naming it for the resemblance of the cement when set to portland stone, a limestone from the Isle of Portland.

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Portland Cement Article about Portland Cement by The ...

Portland Cement. a hydraulic binder composed chiefly of calcium silicates. The most widely used cement in modern construction, Portland cement is obtained by pulverizing clinker with gypsum (3–7 percent); active mineral additives (10–15 percent) may be added to the mixture. Clinker is produced upon calcination (to the point of complete ...

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Portland Cement - an overview ScienceDirect Topics

Portland Cement. Portland cement is essentially a calcium silicate cement, which is produced by firing to partial fusion, at a temperature of approximately 1500°C, a well-homogenized and finely ground mixture of limestone or chalk (calcium carbonate) and an appropriate quantity of clay or shale. From: Advanced Concrete Technology, 2003.

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Portland Cement - an overview ScienceDirect Topics

Vivek Bindiganavile, Meghdad Hoseini, in Developments in the Formulation and Reinforcement of Concrete (Second Edition), 2019. 16.3.1 Portland cement. Portland cement is the main cementitious component of foamed concrete. It has been used at dosages varying from as high as 1400 kg/m 3 to as low as 75 kg/m 3 but in practice, usually between 300 and 500 kg/m 3 (ACI 523.1R-06, 2006; British ...

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Cement Encyclopedia

Cement made at Rosendale, New York, was the most famous, but that made at Coplay, Pennsylvania, the most significant, because it became the first American Portland cement. Portland cement, made by burning and pulverizing briquets of an artificial mixture of limestone (chalk) and clay, was so named because the hardened cement resembled a well ...

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Arkansas Portland Cement Company - Encyclopedia of Arkansas

The Arkansas Portland Cement Company in Okay (Howard County); circa 1940s. Courtesy of the Butler Center for Arkansas Studies, Central Arkansas Library System /

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Cement - Encyclopedia Britannica Britannica

Cement, in general, adhesive substances of all kinds, but, in a narrower sense, the binding materials used in building and civil engineering construction. Cements of this kind are finely ground powders that, when mixed with water, set to a hard mass.Setting and hardening result from hydration, which is a chemical combination of the cement compounds with water that yields submicroscopic ...

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Portland cement - Academic Kids

Portland cement is the most common type of cement in general usage, as it is a basic ingredient of concrete and mortar.It consists of a mixture of oxides of calcium, silicon and aluminum.Portland cement and similar materials are made by heating limestone (as source of calcium) with clay or sand (as source of silicon) and grinding the product. The resulting powder, when mixed with water, will ...

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Portland Cement - an overview ScienceDirect Topics

Vivek Bindiganavile, Meghdad Hoseini, in Developments in the Formulation and Reinforcement of Concrete (Second Edition), 2019. 16.3.1 Portland cement. Portland cement is the main cementitious component of foamed concrete. It has been used at dosages varying from as high as 1400 kg/m 3 to as low as 75 kg/m 3 but in practice, usually between 300 and 500 kg/m 3 (ACI 523.1R-06, 2006; British ...

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Cement, portland,chemicals 65997-15-1 wiki

Feb 22, 2019  When Portland cement (CAS NO.65997-15-1) is mixed with water a highly alkaline solution (pH ~13) is produced by the dissolution of calcium, sodium and potassium hydroxides. Gloves, goggles and a filter mask should be used for protection. Hands should be washed after contact.

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White_Portland_cement - chemeurope

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 ...

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Portland cement - Wikipedia, the free encyclopedia ...

Portland cement - Wikipedia, the free encyclopedia - Read online for free. dgd

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MEDUSA CORP. Encyclopedia of Cleveland History Case ...

MEDUSA CORP., a nationally known cement company, was founded by 3 brothers, Arthur, Spencer, and Wm. Newberry, as the Sandusky Portland Cement Co. in 1892, with offices in Cleveland and a plant at Bay Bridge near Sandusky.The company was shortly renamed Medusa Portland Cement Co. for the Greek goddess Medusa, who turned all who looked at her to stone.

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Portland Cement Definition of Portland Cement by Merriam ...

Jun 05, 2021  Portland cement definition is - a hydraulic cement made by finely pulverizing the clinker produced by calcining to incipient fusion a mixture of clay and limestone or similar materials.

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Okay (Howard County) - Encyclopedia of Arkansas

Cement foundations were poured in November 1928. Almost a year later, the $1 million Arkansas Portland O. K. Cement Company was dedicated with an explosion of a 20,200-pound dynamite blast at the new quarry. On October 2, 1929, less than a month

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Limestone The Encyclopedia of Oklahoma History and Culture

Mixed with sand, aggregate, and water, portland cement is used in making concrete, and in masonry applications. In the early twentieth century and afterwards, cement plants appeared in Oklahoma wherever limestone and shale were abundant, and coincided with the railroad; inexpensive natural gas and coal were also available for fuel.

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Edison Portland Cement Company - WikiMili, The Free ...

Edison with a model of a concrete house. The Edison Portland Cement Company was a venture by Thomas Edison that helped to improve the Portland cement industry. Edison was developing an iron ore milling process and discovered a market in the sale of waste sand to cement manufacturers. He decided to set up his own cement company, founding it in New Village, New Jersey in 1899, and went on to ...

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Materials Free Full-Text Portland Cements with High ...

Portland cement-based materials such as concrete are nowadays the most widely used construction materials. Due to a global production of cement and big quantities of concrete produced and consumed globally, the cement industry accounts for around 4% of the total global greenhouse gas emissions and up to 8% of the total global anthropogenic CO 2 emissions [].

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Cement Article about cement by The Free Dictionary

cement. 1. A material or a mixture of materials (without aggregate) which, when in a plastic state, possesses adhesive and cohesive properties and hardens in place. Frequently, the term is used incorrectly for concrete, e.g., a “cement” block for concrete block. See also portland cement.

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Portland cement - definition of Portland cement by The ...

Portland cement synonyms, Portland cement pronunciation, Portland cement translation, English dictionary definition of Portland cement. or portland cement n. A hydraulic cement made by heating a limestone and clay mixture in a kiln and pulverizing the resulting material.

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Cement, portland,chemicals 65997-15-1 wiki

Feb 22, 2019  When Portland cement (CAS NO.65997-15-1) is mixed with water a highly alkaline solution (pH ~13) is produced by the dissolution of calcium, sodium and potassium hydroxides. Gloves, goggles and a filter mask should be used for protection. Hands should be washed after contact.

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Portland cement Project Gutenberg Self-Publishing ...

Portland cement is the most common type of cement in general use around the world, used as a basic ingredient of concrete, mortar, stucco, and most non-specialty grout.It developed from other types of hydraulic lime in England in the mid 19th century and usually originates from limestone.It is a fine powder produced by heating materials in a kiln to form what is called clinker, grinding the ...

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Portland cement - Wikipedia, the free encyclopedia ...

Portland cement - Wikipedia, the free encyclopedia - Read online for free. dgd

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Oregon Portland Cement Building - Oregon Portland Cement ...

Oregon Portland Cement Building - Oregon Portland Cement Building. From Wikipedia, The Free Encyclopedia. Share. Pin. Tweet. Send. Share. Send. Oregon Portland Cement Building. U.S. National Register of Historic Places. Portland Historic Landmark. Oregon Portland Cement Building in 2009 ...

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Portland cement - definition of Portland cement by The ...

Portland cement synonyms, Portland cement pronunciation, Portland cement translation, English dictionary definition of Portland cement. or portland cement n. A hydraulic cement made by heating a limestone and clay mixture in a kiln and pulverizing the resulting material.

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cement Infoplease

Modern portland cement is made by mixing substances containing lime, silica, alumina, and iron oxide and then heating the mixture until it almost fuses. During the heating process dicalcium and tricalcium silicate, tricalcium aluminate, and a solid solution containing iron are formed.

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Materials Free Full-Text Portland Cements with High ...

Portland cement-based materials such as concrete are nowadays the most widely used construction materials. Due to a global production of cement and big quantities of concrete produced and consumed globally, the cement industry accounts for around 4% of the total global greenhouse gas emissions and up to 8% of the total global anthropogenic CO 2 emissions [].

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Cement - Simple English Wikipedia, the free encyclopedia

Cement is a material that hardens and sticks to other materials to hold them together. Portland cement is a common kind, and made from quicklime (heated limestone) and clay. Cement is used to make concrete and mortar. Wikimedia Commons has media related to Cement: This page was last changed on 9 November 2019, at 00:05. ...

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Ada The Encyclopedia of Oklahoma History and Culture

Meetings were held, a collection was taken, Gov. Charles Haskell was lobbied, and East Central College (present East Central University) was founded in 1909. In 1910 the Portland Cement Company installed the first cement clinker, a dry-process plant fueled by coal, in Oklahoma at Ada.

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Portland limestone - Simple English Wikipedia, the free ...

In a cement Edit. In 1824 Joseph Aspdin invented a cement by burning a mixture of limestone and clay. The limestone he used was Portland linestone, and so he patented the term Portland Cement. Builders quickly recognised that it was better than older cements, although more expensive. It is still widely used in the building trade today.

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Cemex- White Portland Cement - The Engineering ...

Cemex- Assiut Ordinary Portland Cement, Ton EGP 850.00. اسمنت بورتلاندي عادي ...

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Tolhurst V. Associated Portland Cement Manufacturers, Ltd ...

Apr 02, 2013  This entry about Tolhurst V. Associated Portland Cement Manufacturers, Ltd. has been published under the terms of the Creative Commons Attribution 3.0 (CC BY 3.0) licence, which permits unrestricted use and reproduction, provided the author or authors of the Tolhurst V. Associated Portland Cement Manufacturers, Ltd. entry and the Encyclopedia ...

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Huron Portland Cement Company v. Detroit Cases US ...

Huron Portland Cement Company v. Detroit Huron Portland Cement Company v. Detroit 362 U.S. 440 (1960) United States Constitution. According to the Encyclopedia of the American Constitution, about its article titled 285 HURON PORTLAND CEMENT COMPANY v.DETROIT 362 U.S. 440 (1960) In a case involving a major commerce clause issue, a 7_2 Supreme Court sustained Detroit’s Smoke

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