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Ferrocement or ferro-cement [1] is a system of construction using reinforced mortar [2] or plaster (lime or cement, sand, and water) applied over an "armature" of metal mesh, woven, expanded metal, or metal-fibers, and closely spaced thin steel rods such as rebar. The metal commonly used is iron or some type of steel, and the mesh is made with ...
A fire ring is designed to contain a fire that is built directly upon the ground, such as a campfire. Fire rings have no bottom, and are simply circles made of forged metal, stones, concrete, etc. which surround and contain a fire. Manufactured steel fire rings are available in various sizes to suit every need. [citation needed]
Charles Martin Hall (December 6, 1863 – December 27, 1914) was an American inventor, businessman, and chemist.He is best known for his invention in 1886 of an inexpensive method for producing aluminium, which became the first metal to attain widespread use since the prehistoric discovery of iron.
Aluminium alloys found many uses in the late 19th and early 20th centuries. For instance, aluminium bronze is applied to make flexible bands, sheets, and wire, and is widely employed in the shipbuilding and aviation industries. [101] Aviation used a new aluminium alloy, duralumin, invented in 1903. [102]
1824 – Portland cement patent issued to Joseph Aspdin; 1825 – Metallic aluminum produced by Hans Christian Ørsted; 1839 – Vulcanized rubber invented by Charles Goodyear; 1839 – Silver-based photographic processes invented by Louis Daguerre and William Fox Talbot; 1855 – Bessemer process for mass production of steel patented by Henry ...
Before the early 1800s, aluminum had not been produced as an isolated metal. It wasn't until 1825 that; Hans Christian Ørsted discovered how to create elemental aluminum via the reduction of aluminum chloride. Since aluminum is a light element with good mechanical properties, it was widely sought to replace heavier less functional metals like ...
Steel is an alloy composed of between 0.2 and 2.0 percent carbon, with the balance being iron. From prehistory through the creation of the blast furnace, iron was produced from iron ore as wrought iron, 99.82–100 percent Fe, and the process of making steel involved adding carbon to iron, usually in a serendipitous manner, in the forge, or via the cementation process.
Harry Brearley (18 February 1871 – 14 July 1948) was an English metallurgist, credited with the invention of "rustless steel" (later to be called "stainless steel" in the anglophone world). Based in Sheffield , his invention brought affordable cutlery to the masses, and saw an expansion of the city's traditional cutlery trade.