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Edmond Coignet
Edmond Coignet (4 July 1856 – 1915) was a French engineer and entrepreneur. He has been instrumental in the theory of reinforced concrete. Life and Achievements Coignet was the son of industrialist François Coignet (1814-1888) and educated at the Ecole Centrale Paris, École Centrale des Arts et Manufactures (École Centrale Paris). He was the inventor of the agglomerated concrete to strengthen the cement with metal inserts. He permanently reoriented the family business to construction. In 1892 he applied his innovative construction methods on the aqueduct of Achères in Paris. Coignet was the first to use reinforced concrete piles and built with the architect Jacques Hermant some of the first Parisian buildings in this material. References * L'art de l'ingénieur, sous la dir. de Antoine Picon, éd. du Moniteur, 600 p. () {{DEFAULTSORT:Coignet, Edmond 1856 births 1915 deaths Concrete pioneers French civil engineers École Centrale Paris alumni Structural engineer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ville D'Avray
Ville-d'Avray () is a commune in the western suburbs of Paris, France. It is located from the centre of Paris. The commune is part of the arrondissement of Boulogne-Billancourt in the Hauts-de-Seine department. In 2019, it had a population of 11,225. Demographics Transport Ville-d'Avray contains a suburban rail line station called Sèvres – Ville d'Avray station on the Transilien Paris-Saint-Lazare suburban rail line. This station is an 800-meter walk from the residential area of Ville-d'Avray. Personalities Jean Rostand was a French experimental biologist and philosopher who lived in Ville-d'Avray. He became famous for his work as a science writer, as well as a philosopher and an activist. His scientific work covered a variety of biological fields such as amphibian embryology, parthenogenesis and teratogeny, while his literary output extended into popular science, history of science and philosophy. His work in the area of cryogenics gave the idea of cryonics to Robert E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
École Centrale Paris
École Centrale Paris (ECP; also known as École Centrale or Centrale) was a French grande école in engineering and science. It was also known by its official name ''École Centrale des Arts et Manufactures''. In 2015, École Centrale Paris merged with Supélec to form CentraleSupélec, a constituent college of the University of Paris-Saclay. Founded in 1829, it was among the most prestigious and selective grandes écoles. Rooted in rich entrepreneurial tradition since the industrial revolution era, it served as the cradle for top-level engineers and executives who continue to constitute a major part of the industry leadership in France. Since the 19th century, its model of education for training generalist engineers inspired the establishment of several engineering institutes around the world, such as the École Polytechnique Fédérale de Lausanne in Switzerland, Faculté polytechnique de Mons in Belgium, as well as other member schools of the Ecole Centrales Group allianc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Entrepreneur
Entrepreneurship is the creation or extraction of economic value. With this definition, entrepreneurship is viewed as change, generally entailing risk beyond what is normally encountered in starting a business, which may include other values than simply economic ones. An entrepreneur is an individual who creates and/or invests in one or more businesses, bearing most of the risks and enjoying most of the rewards.The process of setting up a business is known as entrepreneurship. The entrepreneur is commonly seen as an innovator, a source of new ideas, goods, services, and business/or procedures. More narrow definitions have described entrepreneurship as the process of designing, launching and running a new business, which is often similar to a small business, or as the "capacity and willingness to develop, organize and manage a business venture along with any of its risks to make a profit." The people who create these businesses are often referred to as entrepreneurs. While def ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reinforced Concrete
Reinforced concrete (RC), also called reinforced cement concrete (RCC) and ferroconcrete, is a composite material in which concrete's relatively low ultimate tensile strength, tensile strength and ductility are compensated for by the inclusion of reinforcement having higher tensile strength or ductility. The reinforcement is usually, though not necessarily, steel bars (rebar) and is usually embedded passively in the concrete before the concrete sets. However, Prestressed_concrete#Post-tensioned_concrete, post-tensioning is also employed as a technique to reinforce the concrete. In terms of volume used annually, it is one of the most common engineering materials. In corrosion engineering terms, when designed correctly, the alkalinity of the concrete protects the steel rebar from corrosion. Description Reinforcing schemes are generally designed to resist Tension (physics), tensile Stress (mechanics), stresses in particular regions of the concrete that might cause unacceptable frac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
François Coignet
François Coignet (10 February 1814 – 30 October 1888) was a French industrialist and a pioneer in the development of reinforced concrete as the first person to use iron-reinforced concrete to construct buildings.Day, p. 284 Biography Coignet, along with his brothers Louis (b. 1819) and Stephane (b. 1820), took over the family business, a chemical plant in Lyon, in 1846. In 1847, he built some concrete houses using poured cement that was not reinforced with iron. In 1850, Coignet married Clarisse Gauthier (1823-1918) and a year later, he settled in Saint-Denis, a commune near Paris, where in 1852 he opened a second plant and obtained a patent for cement clinker. Coignet then built a cement factory at Saint-Denis using exposed lime walls and followed the pisé de terre system, a rammed-earth method of construction. This was the first time he worked with this method in concrete. Later, he took out a patent in England entitled "''Emploi de Béton''", which gave details of h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agglomerate
Agglomerate (from the Latin ''agglomerare'' meaning "to form into a ball") is a coarse accumulation of large blocks of volcanic material that contains at least 75% bombs. Volcanic bombs differ from volcanic blocks in that their shape records fluidal surfaces: they may, for example, have ropy, cauliform, scoriaceous, folded, spindle, spatter, ribbon, ragged, or amoeboid shapes. Globular masses of lava may have been shot from the crater at a time when partly molten lava was exposed, and was frequently shattered by sudden outbursts of steam. These bombs were viscous at the moment of ejection and by rotation in the air acquired their shape. They are commonly in diameter, but specimens as large as have been observed. There is less variety in their composition at any one volcanic centre than in the case of the lithic blocks, and their composition indicates the type of magma being erupted. Agglomerates are typically found near volcanic vents and within volcanic conduits, where the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Concrete
Concrete is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens (cures) over time. Concrete is the second-most-used substance in the world after water, and is the most widely used building material. Its usage worldwide, ton for ton, is twice that of steel, wood, plastics, and aluminum combined. Globally, the ready-mix concrete industry, the largest segment of the concrete market, is projected to exceed $600 billion in revenue by 2025. This widespread use results in a number of environmental impacts. Most notably, the production process for cement produces large volumes of greenhouse gas emissions, leading to net 8% of global emissions. Other environmental concerns include widespread illegal sand mining, impacts on the surrounding environment such as increased surface runoff or urban heat island effect, and potential public health implications from toxic ingredients. Significant research and development i ... [...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] |
Jacques Hermant
__NOTOC__ Jacques-René Hermant (7 May 1855 in Paris, France – 5 June 1930 in France) was a French architect, one of the most renowned architects of fin-de-siècle Paris. Born in Paris, the son of the architect Achille Hermant (1823-1903), Hermant was educated at the École des Beaux-Arts under Joseph Auguste Émile Vaudremer. He was a rationalist architect, but was a strong advocate for the neoromanticism style of the time, preferably the style of ''Louis XIII''. Hermant became an advocate for concrete construction and erected two of the first reinforced concrete buildings in Paris, collaborating with the French engineer Edmond Coignet (1856–1915), who patented his system in 1892. Hermant was a professor at the École des Beaux-Arts in Paris and served as chief architect for the city. He employed the Danish architect Hack Kampmann during Kampmann's stay in Paris in 1883. Significant buildings * the French pavilion for the World's Columbian Exposition, Chicago ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1856 Births
Events January–March * January 8 – Borax deposits are discovered in large quantities by John Veatch in California. * January 23 – American paddle steamer SS ''Pacific'' leaves Liverpool (England) for a transatlantic voyage on which she will be lost with all 186 on board. * January 24 – U.S. President Franklin Pierce declares the new Free-State Topeka government in "Bleeding Kansas" to be in rebellion. * January 26 – First Battle of Seattle: Marines from the suppress an indigenous uprising, in response to Governor Stevens' declaration of a "war of extermination" on Native communities. * January 29 ** The 223-mile North Carolina Railroad is completed from Goldsboro through Raleigh and Salisbury to Charlotte. ** Queen Victoria institutes the Victoria Cross as a British military decoration. * February ** The Tintic War breaks out in Utah. ** The National Dress Reform Association is founded in the United States to promote "rat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1915 Deaths
Events Below, the events of World War I have the "WWI" prefix. January *January – British physicist Sir Joseph Larmor publishes his observations on "The Influence of Local Atmospheric Cooling on Astronomical Refraction". *January 1 ** WWI: British Royal Navy battleship HMS ''Formidable'' is sunk off Lyme Regis, Dorset, England, by an Imperial German Navy U-boat, with the loss of 547 crew. ** Battle of Broken Hill: A train ambush near Broken Hill, New South Wales, Australia, is carried out by two men (claiming to be in support of the Ottoman Empire) who are killed, together with 4 civilians. * January 5 – Joseph E. Carberry sets an altitude record of , carrying Capt. Benjamin Delahauf Foulois as a passenger, in a fixed-wing aircraft. * January 12 ** The United States House of Representatives rejects a proposal to give women the right to vote. ** '' A Fool There Was'' premières in the United States, starring Theda Bara as a ''femme fatale''; she quickly becomes one o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
