macadamize (Amer.)
v. macadamise, pave a road or other surface with macadam (layers of broken stones) | ||||
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Macadamizing definition was found in categories: Language, Idioms & Slang(2) Encyclopedia(1)
Macadamizing Definition from Language, Idioms & Slang Dictionaries & Glossaries
| Webster's Revised Unabridged Dictionary (1913) |
Macadamizing
(p. pr. & vb. n.)
of Macadamize
(p. pr. & vb. n.)
of Macadamize
| WordNet 2.0 |
macadamize
Verb
1. surface with macadam; "macadam the road"
(synonym) macadamise, tarmac
(hypernym) coat, surface
(derivation) macadam
Verb
1. surface with macadam; "macadam the road"
(synonym) macadamise, tarmac
(hypernym) coat, surface
(derivation) macadam
Macadamizing Definition from Encyclopedia Dictionaries & Glossaries
| Wikipedia English - The Free Encyclopedia |
John Loudon McAdam
John Loudon McAdam (September 21 1756 - November 26 1836) was a Scottish engineer and road-builder. He invented a new process, "macadamisation", for building roads with a smooth hard surface that would be more durable and less muddy than soil-based tracks.
Modern road construction still reflects McAdam's influence. Of subsequent improvements, the most significant was the introduction of tar (originally coal tar) to bind the road surface's stones together – "tarmac" (for Tar Macadam) – followed later by the use of hot-laid tarred aggregate or tar-sprayed chippings to create better road metalling. More recently, oil-based asphalt laid on reinforced concrete has become a major road surface, but its use of granite or limestone chippings still recalls McAdam's innovation.
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Macadam
Macadam is a type of road construction pioneered by the Scotsman John Loudon McAdam in around 1820. It consisted of creating three layers of stones laid on a crowned subgrade with side ditches for drainage. The first two layers consisted of angular hand-broken aggregate, maximum size 3 inches (75 mm), to a total depth of about 8 inches (200 mm). The third layer was about 2 inches (50 mm) thick with a maximum aggregate size of 1 inch (25 mm). Each layer would be compacted with a heavy roller, causing the angular stones to lock together with their neighbours.
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