Bitumen

Bitumen defines a class of black or dark-colored (solid, semisolid, or viscous) cementitious substances, natural or manufactured, composed principally of high molecular weight hydrocarbons, of which asphalts, tars, pitches, and asphaltites are typical.

bituminous = containing or treated with bitumen (also bituminized). Examples: bituminous concrete, bituminized felts and fabrics, bituminous pavement