A bituminous material of high molecular weight occurring both naturally and as a residue from the distillation of PETROLEUM. It is used as a waterproofing agent or additive and as a surfacing material for...

Asphalt is a sticky, black and highly viscous liquid or semi-solid that is present in most crude petroleums and in some natural deposits. It is most commonly modeled as a colloid, with asphaltenes as the dispersed phase and maltenes as the continuous...