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
9. bitumen (material)
10. asphalt (bituminous material)
11. modified asphalt

Additional parents:

1. top of the aat hierarchies
2. Materials Facet
3. Materials
4. materials
5. materials by composition
6. inorganic material
7. concrete
8. concrete by composition or origin

Anotations

Scope note:

A composite material consisting of gravel, sand, and stone that is bound together with asphalt; it is laid down in layers and compacted. It is commonly used in construction projects such as road surfaces, airports, and parking lots. The ingredients are mixed under high temperatures and kept heated until applied to a surface.