Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. organic material
7. bituminous material
8. natural bituminous material

Narrower term/s

• asphalt (bituminous material)[+]
  • gilsonite
  • lake asphalt
  • modified asphalt [+]
    • asphalt cement [NP]
    • asphalt concrete
    • artificial asphalt
    • petroleum asphalt
    • emulsified asphalt
    • paving asphalt
    • asphaltic bitumen
    • cutback asphalt [+]
      • rapid-curing asphalt
      • slow-curing asphalt
      • medium-curing asphalt
  • natural asphalt
  • red asphalt
• rock asphalt
• asphaltite

Anotations

Scope note:

Any of various solid or semisolid mixtures of hydrocarbons that occur in nature or that are obtained as residues from the distillation of petroleum or coal. For the blackish hydrocarbon portion of asphalt, use "asphaltic bitumen."