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.