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The tarmac scam is a confidence trick in which criminals sell fake or shoddy tarmac (asphalt) and driveway resurfacing. It is particularly common in Europe but practiced worldwide. [1] [2] Other names include the paving scam, tarmacking, the asphalt scam, driveway fraud or similar variants.
Stone mastic asphalt (SMA), also called stone-matrix asphalt, was developed in Germany in the 1960s with the first SMA pavements being placed in 1968 near Kiel. [1]
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]
A more durable road surface (modern mixed asphalt pavement), sometimes referred to in the U.S. as blacktop, was introduced in the 1920s. Instead of laying the stone and sand aggregates on the road and then spraying the top surface with binding material, in the asphalt paving method the aggregates are thoroughly mixed with the binding material ...
In 1956, they developed the first auto-grade-and-slope pavers. [5] Blaw-Knox went on to establish a broad line of paving machines for the US and UK markets. The UK employed a distinctly different paving method, applying a deeper mat of asphalt than was common in the US, which resulted in a marked reduction in paving speed.
One safe and effective means to clean a roof is an electric agricultural sprayer system, as originally developed in Florida, USA in the early 1990s. [6] The equipment is used to apply a cleaning solution (typically containing bleach) that kills the algae, bacteria, mold, mildew, moss, fungus and other organic organisms growing on the roof.
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.
The quarry which is operated by Tarmac produces Carboniferous Limestone, which is mainly for use on the roads, [1] after crushing on site. [2] The site has an expected output of 28 million tonnes over a 25-year period. [3] In 1999 the car park at the quarry was used as a test site for a porous asphalt pavement. [4]
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