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The apron at airports is sometimes informally called the tarmac, [6] even though most of these areas are paved with concrete, not tarmac. [9] Specific materials used include asphalt concrete (which itself is often inexactly called "tarmac", adding to the confusion), porous friction course, and Portland cement concrete. [10]
Runways, taxiways and ramps, are sometimes referred to as "tarmac", though very few runways are built using tarmac. Takeoff and landing areas defined on the surface of water for seaplanes are generally referred to as waterways. Runway lengths are now commonly given in meters worldwide, except in North America where feet are commonly used. [2]
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]
The differences were often regional and were dictated by differing circumstances, whether they had to defend a sea dike against a storm surge or keep the water level in a polder within bounds. [5] In the middle of the 20th century there were about 2,700 water control boards. After many mergers there are currently 21 water boards left.
Bitumen mixed with clay was usually called "asphaltum", but the term is less commonly used today. [15] In American English, "asphalt" is equivalent to the British "bitumen". However, "asphalt" is also commonly used as a shortened form of "asphalt concrete" (therefore equivalent to the British "asphalt" or "tarmac").
President-elect Donald Trump is not letting up on his suggestions that the US should retake the Panama Canal, an idea that has been rejected by the government of Panama, which has controlled the ...
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.
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