BITUMINOUS SURFACE CONSTRUCTION

摘要

A bituminous surface construction, for example for a road or pavement, comprising: (a) a substrate comprising a mix of bitumen emulsion and aggregate material, the emulsion being either cationically or anionically charged; and (b) a coating on the said bitumen emulsion-aggregate substrate, which coating comprises a bitumen emulsion of opposite ionic charge to the bitumen emulsion of the bitumenemulsion-aggregate substrate.