use of a permeable bituminous composition with an open structure in hydraulic engineering.

摘要

The present invention relates to a process for the manufacture of a permeable bituminous composition with an open structure, characterised in that the bituminous composition with an open structure, according to the invention, is obtained in a first stage by mixing together dry sand, weak filler and cellulose fibres, in a second stage by converting these aggregates into an asphalt mastic by adding liquid bitumen with heating and, in a third stage, by mixing this asphalt mastic with size-graded gravel.