What is Asphalt/Bitumen?

By: | July 20 , 2022

Asphalt is a residue of the process of natural distillation of petroleum or the distillation of crude oil in a petroleum refinery, it is also known as bitumen. It is a black, sticky, and highly viscous liquid; it is also available in semi-solid form. The naturally occurring bitumen is known as crude bitumen while the bitumen formed in petroleum refineries is known as refined bitumen.

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A major portion of the asphalt produced is widely used in the construction of roads,   highways, playgrounds, etc., it is also used in waterproofing roofs.

The characteristics of asphalt/bitumen are –

  • They have good adhesive properties and can combine materials together without changing their physical or chemical properties.
  • They are insoluble in water and form a very good sealant for waterproofing.
  • Asphalt and bitumen have very good thermoplastic properties, they are liquid when heated and solidify when cooled.
  • Asbestos and Bitumen are highly durable. They can last for years if proper care is taken.
  • In road construction, bitumen and asphalt are effective in load distribution of traffic to the layers beneath.

It is a very economical material and is extensively used throughout the world.

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