Asphalt
  • Asphalt (AKA Bitumen) is a black, sticky, highly viscous fluid that is extracted from crude oil.
  • It can be obtained from the oil through a process known as fractional distillation
    • This process exploits the different melting points of chemicals.
    • The substance is evaporated and then condensed in a different area.
  • It is then refined by reacting it with oxygen.
  • It is often used in pavings for roads in asphalt concrete or tarmac.
    • Asphalt is used as a binder for the aggregate instead of cement.
  • It is used as a road paving due to its toughness and crack resistance.
  • Although its best feature for this application is that it does not generate as much noise as other concretes.