asphaltic

from WordNet (r) 3.0 (2006)

asphaltic
    adj 1: containing asphalt; "asphaltic residues"

from The Collaborative International Dictionary of English v.0.48

Asphaltic \As*phal"tic\, a.
   Pertaining to, of the nature of, or containing, asphalt;
   bituminous. "Asphaltic pool." "Asphaltic slime." --Milton.
   [1913 Webster]