What is the difference between asphalt and bituminous material?
Asphalt is a subset of all bituminous materials. Asphalt contains binders, additives, and aggregates that are suitable for road surfaces, in that they can transmit heavy loads to the base with minimal permanent deformation. Other bituminous material: sealing tar, binder tars for aggregates, impregnated felt, water barrier materials, roof sealing compounds, asphalt roof shingles, and others.