Asphalt
Asphalt
Asphalt (pronounced: /ˈæsfɔːlt/ or /ˈæʃfɔːlt/), also known as bitumen (pronounced: /bɪˈtjuːmɪn/), is a sticky, black, and highly viscous liquid or semi-solid form of petroleum. It may be found in natural deposits or may be a refined product, and is classed as a pitch.
Etymology
The word "asphalt" is derived from the late Middle English, in turn from French asphalte, based on Late Latin asphalton, asphaltum, derived from the Ancient Greek ἄσφαλτος (ásphaltos, “secure”).
Related Terms
Uses
Asphalt is used in road construction, where it is used as the glue or binder mixed with aggregate particles to create asphalt concrete. Its other main uses are for bituminous waterproofing products, including production of roofing felt and for sealing flat roofs.
Health Effects
Exposure to asphalt fumes can cause serious injury and permanent damage. Workers that may be exposed to asphalt fumes need to be aware of the potential hazards in their work environment.
See Also
External links
- Medical encyclopedia article on Asphalt
- Wikipedia's article - Asphalt
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