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Cement Industry In The United States
The cement industry in the United States produced of cement in 2015, worth US$9.8 billion, and was used to manufacture concrete worth about US$50 billion. The US was the world's third-largest producer of cement, after China and India. The US cement industry includes 99 cement mills in 34 states, plus two plants in Puerto Rico. The industry directly employed 10,000 workers in 2015. Ten percent of the cement used in the United States in 2015 was imported.US Geological SurveyCement Mineral Commodity Summary, 2016. Uses The types and amounts of cement produced in 2015 were: * Portland cement 80.4 million tons * Masonry cement 2.4 million tons * Other hydraulic cement 0.6 million tons Cement production is predominantly portland cement, which is mostly used in concrete. Cement for concrete is an essential material for construction, and demand is a function of construction spending. Single-family residential construction is considered only moderately cement-intensive; multifamily resi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cement
A cement is a binder, a chemical substance used for construction that sets, hardens, and adheres to other materials to bind them together. Cement is seldom used on its own, but rather to bind sand and gravel ( aggregate) together. Cement mixed with fine aggregate produces mortar for masonry, or with sand and gravel, produces concrete. Concrete is the most widely used material in existence and is behind only water as the planet's most-consumed resource. Cements used in construction are usually inorganic, often lime or calcium silicate based, which can be characterized as hydraulic or the less common non-hydraulic, depending on the ability of the cement to set in the presence of water (see hydraulic and non-hydraulic lime plaster). Hydraulic cements (e.g., Portland cement) set and become adhesive through a chemical reaction between the dry ingredients and water. The chemical reaction results in mineral hydrates that are not very water-soluble and so are quite durable i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canada
Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by total area. Its southern and western border with the United States, stretching , is the world's longest binational land border. Canada's capital is Ottawa, and its three largest metropolitan areas are Toronto, Montreal, and Vancouver. Indigenous peoples have continuously inhabited what is now Canada for thousands of years. Beginning in the 16th century, British and French expeditions explored and later settled along the Atlantic coast. As a consequence of various armed conflicts, France ceded nearly all of its colonies in North America in 1763. In 1867, with the union of three British North American colonies through Confederation, Canada was formed as a federal dominion of four provinces. This began an accretion of provinces an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trichloroethane (vinyl trichloride, CHClCHCl)
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Trichloroethane (CHCl) may refer to either of two isomeric chemical compounds: * 1,1,1-Trichloroethane (methyl chloroform, CClCH) * 1,1,2-Trichloroethane 1,1,2-Trichloroethane, or 1,1,2-TCA, is an organochloride solvent with the molecular formula CHCl. It is a colourless, sweet-smelling liquid that does not dissolve in water, but is soluble in most organic solvent A solvent (s) (from the Lati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trichloromethane
Chloroform, or trichloromethane, is an organic compound with formula C H Cl3 and a common organic solvent. It is a colorless, strong-smelling, dense liquid produced on a large scale as a precursor to PTFE. It is also a precursor to various refrigerants. It is trihalomethane. It is a powerful anesthetic, euphoriant, anxiolytic, and sedative when inhaled or ingested. Structure The molecule adopts a tetrahedral molecular geometry with C3v symmetry. Natural occurrence The total global flux of chloroform through the environment is approximately tonnes per year, and about 90% of emissions are natural in origin. Many kinds of seaweed produce chloroform, and fungi are believed to produce chloroform in soil. Abiotic processes are also believed to contribute to natural chloroform productions in soils although the mechanism is still unclear. Chloroform volatilizes readily from soil and surface water and undergoes degradation in air to produce phosgene, dichloromethane, formyl chloride, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trichloroethylene
The chemical compound trichloroethylene is a halocarbon commonly used as an industrial solvent. It is a clear, colourless non-flammable liquid with a chloroform-like sweet smell. It should not be confused with the similar 1,1,1-trichloroethane, which is commonly known as ''chlorothene''. The IUPAC name is trichloroethene. Industrial abbreviations include TCE, trichlor, Trike, Tricky and tri. It has been sold under a variety of trade names. Under the trade names Trimar and Trilene, trichloroethylene was used as a volatile anesthetic and as an inhaled obstetrical analgesic in millions of patients. Groundwater and drinking water contamination from industrial discharge including trichloroethylene is a major concern for human health and has precipitated numerous incidents and lawsuits. History Pioneered by Imperial Chemical Industries in Britain, its development was hailed as an anesthetic revolution. Originally thought to possess less hepatotoxicity than chloroform, and without the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Methylene Chloride
Dichloromethane (DCM or methylene chloride, methylene bichloride) is an organochlorine compound with the formula . This colorless, volatile liquid with a chloroform-like, sweet odour is widely used as a solvent. Although it is not miscible with water, it is slightly polar, and miscible with many organic solvents.Rossberg, M. ''et al.'' (2006) "Chlorinated Hydrocarbons" in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim. . Occurrence Natural sources of dichloromethane include oceanic sources, macroalgae, wetlands, and volcanoes. However, the majority of dichloromethane in the environment is the result of industrial emissions. Production DCM is produced by treating either chloromethane or methane with chlorine gas at 400–500 °C. At these temperatures, both methane and chloromethane undergo a series of reactions producing progressively more chlorinated products. In this way, an estimated 400,000 tons were produced in the US, Europe, and Japan in 1993. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cement Kiln
Cement kilns are used for the pyroprocessing stage of manufacture of portland and other types of hydraulic cement, in which calcium carbonate reacts with silica-bearing minerals to form a mixture of calcium silicates. Over a billion tonnes of cement are made per year, and cement kilns are the heart of this production process: their capacity usually defines the capacity of the cement plant. As the main energy-consuming and greenhouse-gas–emitting stage of cement manufacture, improvement of kiln efficiency has been the central concern of cement manufacturing technology. Emissions from cement kilns are a major source of greenhouse gas emissions, accounting for around 2.5% of non-natural carbon emissions worldwide. The manufacture of cement clinker A typical process of manufacture consists of three stages: * grinding a mixture of limestone and clay or shale to make a fine "rawmix" (see Rawmill); * heating the rawmix to sintering temperature (up to 1450 °C) in a cement k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sintering
Clinker nodules produced by sintering Sintering or frittage is the process of compacting and forming a solid mass of material by pressure or heat without melting it to the point of liquefaction. Sintering happens as part of a manufacturing process used with metals, ceramics, plastics, and other materials. The atoms in the materials diffuse across the boundaries of the particles, fusing the particles together and creating one solid piece. Because the sintering temperature does not have to reach the melting point of the material, sintering is often chosen as the shaping process for materials with extremely high melting points such as tungsten and molybdenum. The study of sintering in metallurgical powder-related processes is known as powder metallurgy. An example of sintering can be observed when ice cubes in a glass of water adhere to each other, which is driven by the temperature difference between the water and the ice. Examples of pressure-driven sintering are the compact ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CRH Plc
CRH may refer to: * Calibre radius head, a traditional British ordnance term for a concept in ballistic projectile design * Celtic Resources Holdings, an Irish mining company * China Railway High-speed, a high-speed railway service operated by China Railways * Choate Rosemary Hall, a private boarding school in Wallingford, Connecticut * Coin roll hunting, the hobby of searching change pulled from circulation for collectible coins * Combat Rescue Helicopter (HH-60W), being developed for the US Air Force based on the Sikorsky UH-60 Black Hawk * Corticotropin-releasing hormone, a polypeptide hormone and neurotransmitter involved in the stress response * CRH plc, a building materials company, based in Ireland * Crimean Tatar language's ISO 639-2 code * Crouch Hill railway station Crouch Hill railway station is a London Overground station on Crouch Hill in the London Borough of Islington, north London. It is on the Gospel Oak to Barking line, from (measured via Kentish Town ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ash Grove Cement Company
Ash Grove Cement Company is a cement manufacturer based in Overland Park, Kansas. It is the sixth largest cement manufacturer in North America, and was the largest US-owned cement company until it was acquired in 2018 by CRH plc, a global building materials business headquartered in Ireland. The company was established in 1882 at Ash Grove, Missouri, as the Ash Grove White Lime Association. It commenced cement manufacture in 1908, with a plant at Chanute, Kansas. It now has an annual cement manufacturing capacity of nearly 9 million tons, from 9 plants: *Chanute, Kansas * Durkee, Oregon *Foreman, Arkansas * Inkom, Idaho *Leamington, Utah *Louisville, Nebraska *Midlothian, Texas * Montana City, Montana *Seattle, Washington *Branford, Florida * Sumterville, Florida * Mississauga, Ontario *Joliette, Quebec The company makes Portland cements, fly ash cements, masonry cements, oilwell cements and soil stabilizers. It also operates a lime plant in Oregon, many ready-mix c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buzzi Unicem
Buzzi Unicem S.p.A. is an Italian company, quoted on the Borsa Italiana, which produces cement, ready-mix concrete, and construction aggregates. Its headquarters are in the town of Casale Monferrato which was once known as the Italian ‘cement capital’. Today it has subsidiaries, interests and operations in Italy, Luxembourg, Germany, Algeria and Eastern Europe as well as in North America. The company was formed in September 1999 when ''Buzzi Cementi'' (founded as Fratelli Buzzi SpA in Trino by the brothers Pietro and Antonio Buzzi in 1907) took over ''Unicem'' (founded as ''Cementi Marchino'' in Casale by Luigi Marchino in 1878), and took on the name ''Buzzi Unicem''. The company was founded by a large family connected to the successful Italian fencer, Lorenzo Buzzi. Growth through acquisition In 2004 the group acquired control of the German cement company ''Dyckerhoff'' (founded as ''Portland-Cement-Fabrik Dyckerhoff & Söhne'' in Amöneburg by Wilhelm Gustav Dyckerhoff ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CEMEX
CEMEX S.A.B. de C.V., known as Cemex, is a Mexican multinational building materials company headquartered in San Pedro, near Monterrey, Mexico. It manufactures and distributes cement, ready-mix concrete and aggregates in more than 50 countries. In 2020 it was ranked as the 5th largest cement company (by amount of cement produced annually) in the world, at 87.09 million tonnes. Lorenzo Zambrano was the chairman and chief executive officer until his death on May 21, 2014. The Board of Directors named Rogelio Zambrano Lozano as chairman, and Fernando A. Gonzalez as CEO. About a quarter of the company's sales come from its Mexico operations, a third from its plants in the U.S., 30% from its operations in Europe, North Africa, the Middle East and Asia, and the rest from its other plants around the world. CEMEX currently operates on four continents, with 64 cement plants, 1,348 ready-mix-concrete facilities, 246 quarries, 269 distribution centers and 68 marine terminals. In the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
