出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2011/06/20 04:09 UTC 版)
Macadam is a type of road construction pioneered by the Scotsman John Loudon McAdam in around 1820. The method simplified what had been considered state-of-the-art at that point. Single sized aggregate layers of stone with a coating of binder as a cementing agent are mixed in an open-structured macadam.