An early form of an improved highway surface, in which several layers of increasing fine stone are placed to form a waterproof surface for vehicles. The surface was also given a crown to drain water to the side. By the end of the 19th century, most major roads in Europe were built this way. It was invented by John Macadam (1756 - 1836) in England in 1816. A layer of asphalt is sometimes placed within the stones.
Paving surface material for driveways & roads, comprised of small compacted pieces of stone. It was invented by John McAdam who combined it with tar to be make Tarmac. An asphalt binder was added and used often approximately 50 years ago, when it was called Tarmacadam.
consists of aggregate, which has been mechanically locked together by rolling and cemented together by application of stone screening and water. Bituminous macadam is crushed aggregate in which the fragments are cemented together by bitumen or asphalt.
Paving surface material for driveways and roads, comprised of small compacted pieces of stone. It was invented by John McAdam who combined it with tar to make Tarmac. An asphalt binder was added, and the resulting product, called Tarmacadam, was used frequently approximately 50 years ago.
Refers to a pavement type generally consisting of large single size aggregate with a surface layer of smaller material with or without binder to lock the surface together. Can be either a bitumen based or water based Macadam Pavement.