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Macadam is a type of road construction pioneered by Scottish engineer John Loudon McAdam c. 1820, in which crushed stone is placed in shallow, convex layers and compacted thoroughly. A binding layer of stone dust (crushed stone from the original material) may form; it may also, after rolling, be covered with a cement or bituminous binder to ...
John Loudon McAdam, 1830, National Gallery, London. John Loudon McAdam (23 September 1756 [1] – 26 November 1836) was a Scottish civil engineer and road-builder. He invented a new process, "macadamisation", for building roads with a smooth hard surface, using controlled materials of mixed particle size and predetermined structure, that would be more durable and less muddy than soil-based tracks.
Tarmacadam is a concrete road surfacing material made by combining tar and macadam (crushed stone and sand), patented by Welsh inventor Edgar Purnell Hooley in 1902. It is a more durable and dust-free enhancement of simple compacted stone macadam surfaces invented by Scottish engineer John Loudon McAdam in the early 19th century.
Map of Roman roads in 125CE Road construction, depicted on Trajan's Column. With the advent of the Roman Empire, there was a need for armies to be able to travel quickly from one area to another, and the roads that existed were often muddy, which greatly delayed the movement of large masses of troops. To solve this problem, the Romans built ...
John Loudon McAdam. John Loudon McAdam (23 September 1756 – 26 November 1836) was a Scottish civil engineer and road-builder. He invented a new process, "macadamisation", for building roads with a smooth hard surface, using controlled materials of mixed particle size and predetermined structure, that would be more durable and less muddy than soil-based tracks.
John Loudon McAdam (1756–1836), Scottish engineer noted for inventing the process of "macadamization" of roads John McAdam (politician) (1807–1893), Irish-born politician in New Brunswick, Canada John Macadam (1827–1865), Australian (Scottish-born) chemist, medical teacher and politician, after whom the Macadamia nut is named
John Loudon McAdam (1756–1836 ... received the first authorization to build a public-utility fast road in 1921, and completed the construction (one lane in each ...
In the 1820s, John Loudon McAdam was working on the turnpike here. It is unclear if he supervised the construction of the early nineteenth-century bridge which still crosses the River Glen on a single stone arch, now carrying the Macmillan Way long-distance footpath. Kates Bridge no longer carries the road, which now crosses the river on a ...