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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.
Later a mixture of coal tar and ironworks slag, patented by Edgar Purnell Hooley as tarmac, was introduced. A more durable road surface (modern mixed asphalt pavement), sometimes referred to in the U.S. as blacktop, was introduced in the 1920s.
Asphalt batch mix plant A machine laying asphalt concrete, fed from a dump truck. Asphalt concrete (commonly called asphalt, [1] blacktop, or pavement in North America, and tarmac or bitumen macadam in the United Kingdom and the Republic of Ireland) is a composite material commonly used to surface roads, parking lots, airports, and the core of embankment dams. [2]
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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.
Tarmac (company), a British building materials company; Tarmac Building Products, the construction materials division of Tarmac; Tarmac Group, former UK-based multinational building materials and construction company; Tarmac Construction, part of Tarmac Group until 1999 when sold off as Carillion
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The Jisulife Handheld Mini Fan gives you that blast of cool air that you need — like when you get back in your car after shopping and it's turned into a roaster. This handy number also boasts 21 ...