1) Chemical mixture 2) Recycled building material
Found on
https://www.crosswordclues.com/clue/bioasphalt
Bioasphalt is an asphalt alternative made from non-petroleum based renewable resources. These sources include sugar, molasses and rice, corn and potato starches, natural tree and gum resins, natural latex rubber and vegetable oils, lignin, cellulose, palm oil waste, coconut waste, peanut oil waste, canola oil waste, dried sewerage effluent and so ...
Found on
http://en.wikipedia.org/wiki/Bioasphalt
No exact match found.
