Surfacing for bridges with prestressed, reinforced or composite concrete decks

摘要

1. Asphalt based surfacing for bridges with decks of concrete, consisting of the actual surface coating (a) of mastic asphalt or asphalt concrete, an asphalt based protective layer (b), similarly predominantly of mastic asphalt, and a subsequent sealing coating (g) which forms the transition to the concrete surface (e), and which is made up of a bituminous sealing course, characterized by the fact that the sealing course (g) is developed as a sheet which displays a coating (j) of metal, in particular of aluminium of stainless steel, or a polymer plastic which remains stable beyond the liquefaction temperature of bitumen, which is perforated or punched, whereby the perforation of holes (1) amount to between 1 and 25 %, in particular between 5 and 10 % of the total surface of the coating, the individual holes (1) are arranged primarily in a random orientation, and the holes (1) have a mean diameter of 0.01 to 1 mm, in particular 0.1 to 0.5 mm.