Loudon McAdam - The History of Roads and Asphalt
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of Roads and Asphalt
John Loudon McAdam (born 1756) designed
roads using broken stones laid in symmetrical, tight patterns and covered
with small stones to create a hard surface. McAdam discovered that the
best stone or gravel for road surfacing had to be broken or crushed, and
then graded to a constant size of chippings. John Loudon McAdam's design,
called "macadam roads," provided the greatest advancement in road construction
at the time.
The water bound Macadam roads were
the forerunners of the bitumen-based binding that was to become tarmacadam.
The word tarmacadam was shortened to the now familiar tarmac. The first
tarmac road to be laid was in Paris in 1854.
Colossus of Roads
Before John Loudon McAdam, road building was an expensive business.
Scottish inventor, John Loudon McAdam
invented the macadam road surface.
The Inventor - John Loudon McAdam
The form of pavement or road surface
we now call "macadam" was invented about two hundred years ago by a Scot
named John Loudon McAdam.
born Sept. 21, 1756 , Ayr, Ayrshire,
died Nov. 26, 1836 , Moffat, Dumfriesshire
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