Portland_cement
Portland cement is the most common type of cement in general usage in many parts of the world, as it is a basic ingredient of concrete, mortar, stucco and most non-specialty grout.It is a fine powder produced by grinding Portland cement clinker (more than 90%), a limited amount of calcium sulfate which controls the set time, and up to 5% minor constituents …
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Portland Cement: A Concrete History With Structural Integrity
Science. Innovation. Inventions. Portland Cement: A Concrete History With Structural Integrity. By: Nicole Antonio | Updated: Jul 18, 2023. A construction worker …
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Concrete | Definition, Composition, Uses, Types, & Facts
concrete, in construction, structural material consisting of a hard, chemically inert particulate substance, known as aggregate (usually sand and gravel), that is bonded together by cement and water. Among the ancient Assyrians and Babylonians, the bonding substance most often used was clay. The Egyptians developed a substance more closely ...
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Ordinary portland cement | cement | Britannica
Other articles where ordinary portland cement is discussed: cement: Types of portland cement: …for Testing and Materials (ASTM): ordinary (Type I), modified (Type II), high-early-strength (Type III), low-heat (Type IV), and sulfate-resistant (Type V). In other countries Type II is omitted, and Type III is called rapid-hardening. Type V is known in …
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Portland cement mineralogy | SpringerLink
Part of the book series: Encyclopedia of Earth Science ( (EESS)) Download reference work entry PDF. Portland cement is a nearly universal building material possessing relatively …
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Medusa Corporation | Encyclopedia
Medusa Corporation. 3008 Monticello Boulevard Cleveland Heights, Ohio 44118 U.S.A. (216) 371-4000 Fax: (216) 371-2912. Public Company Incorporated: 1892 as Sandusky Portland Cement Company Employees: 1,100 Sales: $376 million (1997) Stock Exchanges: New York Ticker Symbol: MSA. SICs: 3421 Cement, Hydraulic; 1423 Crushed & Broken …
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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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ENCYCLOPEDIA OF CHEMICAL
Portland cement of commerce. Portland cement is distinguished from other kinds of
The Editors of Encyclopaedia Britannica | Britannica
Britannica's media editors produce and acquire images, maps, videos, and more for Britannica's products. Britannica's World Data editors research and compile statistical information using a variety of authoritative sources. But Britannica is not just its editorial staff. Britannica has long fostered vigorous interaction between its staff ...
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Coal Fly Ash Use in Cement and Concrete | Encyclopedia …
Coal fly ash reacts with calcium hydroxide from cement hydration reactions to form calcium silicate hydrates called C-S-H gel, contributing to the strength gain of the Portland cement [7]. Coal bottom ash also exhibits a pozzolanic reactivity in …
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Arkansas Portland Cement Company
The Arkansas Portland Cement Company in Okay (Howard County); circa 1940s. Courtesy of the Butler Center for Arkansas Studies, Central Arkansas Library System / The Lucille and Parker Westbrook Collection.
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Portland Cement
Portland cement From Wikipedia, the free encyclopedia. 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-speciality grout.
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Portland limestone
Portland limestone is a limestone which was deposited in the latest stage of the Upper Jurassic period. It was first found on the Isle of Portland, Dorset. [1] However, it occurs over a much wider area, including France . The strata are beds of white-grey limestone separated by beds of chert .
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Concrete Calculator
Portland cement is not a brand name — that is the generic term for the type of cement used in basically all concrete (like how stainless is a type of steel). Through a process called hydration, the cement and water harden and bind the aggregates into a mass similar to a rock. After 28 days, concrete achieves around 99% of maximal …
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Portland Cement
Portland cement is a complex product obtained from unprocessed common natural materials: limestone and clay. Consequently, the characteristics of Portland cement …
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Cement
Cement - Composition, Properties, Major Cements: Portland cement is made up of four main compounds: tricalcium silicate (3CaO · SiO2), dicalcium silicate (2CaO · SiO2), tricalcium aluminate (3CaO · Al2O3), and a tetra-calcium aluminoferrite (4CaO · Al2O3Fe2O3). In an abbreviated notation differing from the normal atomic symbols, these …
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Portland cement
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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Onoda Cement Co., Ltd. | Encyclopedia
Onoda City, Yamaguchi 756. (08368) 3-3331. Fax: (08368) 3-2011. Public Company. Incorporated: 1881. Employees: 1,357. Sales: ¥ 420.68 billion (US$2.93 billion) Stock Exchanges: Tokyo Osaka Nagoya. Onoda Cement Company is the oldest and one of the largest cement companies in Japan, the country with the largest cement industry in the …
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Cement Silo (Illustration)
Portland cement silos in Washington, USA. Portland cement was a fast-setting cement invented in 1824 by the Yorkshireman Joseph Aspdin (1778-1859). …
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GLOBE PORTLAND CEMENT COMPANY
Encyclopedia Dubuque. "Encyclopedia Dubuque is the online authority for all things Dubuque, written by the people who know the city best." ... GLOBE PORTLAND CEMENT COMPANY. From Encyclopedia Dubuque. Jump to navigation Jump to search. GLOBE PORTLAND CEMENT COMPANY. The 1922 …
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Portland cement concrete | Article about portland cement concrete …
A composite stonelike material formed by mixing an aggregate (such as stones of irregular shape or crushed rock) with cement (which acts as the binding material) and water, then allowing the mixture to dry and harden; portland cement, now used in making concrete, was not developed until the 19th century. Also see average concrete, cyclopean ...
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Portland Cement
Abstract. Portland cement is at the same time the fruit of simple technology and a complex science. It consist in firing at 1450 °C very simple pulverized raw materials having a very …
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Cement
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. Cement is widely used for plastering and rendering. Plastering is done for the inner walls, and cement rendering is done for the ...
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MEDUSA CORP. | Encyclopedia of Cleveland History | Case …
MEDUSA CORP. 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 …
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History of Cement
The Birth of Portland Cement: The precursor to modern-day cement was created in 1824 by Joseph Aspdin, a British bricklayer and builder, who experimented with heating …
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Portland_cement
Portland cement is the most common type of cement in general usage in many parts of the world, as it is a basic ingredient of concrete, mortar, stucco and most non-specialty …
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Portland cement
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 nonspeciality grout. It was developed from other types of hydraulic lime in England in the mid 19th century and usually originates from limestone. It i
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Blue Circle Industries PLC | Encyclopedia
Blue Circle Industries PLC. 84 Eccleston Square London SW1V IPX United Kingdom (071) 828-3456 Fax: (071) 245-8169. Public Company Incorporated: 1900 as Associated Portland Cement Manufacturers (1900) Ltd. Employees: 20,818 Sales: £ 1.28 billion (US$2.01 billion) Stock Exchange: London. The U.K. cement industry has its roots in the early 1800s. In …
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