Coal asphalt manufacturer Chaisha
Modified asphalt refers to the asphalt obtained by deep processing of coal tar or ordinary coal asphalt. It has the following features:
1. It is a black solid at room temperature and has a certain luster.
2. At a certain temperature, it will solidify into a very brittle solid with shell-like fractures, and it will be glassy.
3. There is no certain melting point, but it can be melted within a certain melting point range.
4. There is no thermal effect during solidification.
5. The components of asphalt are extremely complex, most of them are aromatic hydrocarbons above the tricyclic ring, as well as heterocyclic compounds containing elements such as oxygen, nitrogen and sulfur and a small amount of polymer carbon substances.
6. It has a foul smell and is toxic.
7. The boiling point is less than 470 and the flash point is 2044℃。
8. The relative density is 115-1.between 25.
9. Comply with YB T5194-93 modified asphalt standard.
10. Quality indicators include toluene insoluble content (28-34%), quinoline insoluble content (8-14%), resin content (18%), coking value (54%) and ash content (0.).3%) and moisture (5%).
In addition, modified asphalt converts coal asphalt into asphalt with better performance through chemical modification methods, which has the advantages of higher softening point, better oxidation resistance and higher adhesion, so it has been widely used in road construction, waterproofing materials and other fields.