| Term | Description |
|---|---|
| Modified bitumen | See "polymer-modified bitumen." |
| Polymer-modified bitumen | (1) A bitumen modified by including one or more polymers (e.g., atactic polypropylene, styrene butadiene styrene); (2) composite sheets consisting of a polymer-modified bitumen often reinforced with various types of mats or films and sometimes surfaced with films, foils or mineral granules. |
