Bitumen is one of the petrochemical materialsthat has a black color and its main use is to produce asphalt. Bitumen is a dense hydrocarbon derived from oil and is divided into two categories: natural bitumen and loose and mixed bitumen.
Bitumen is obtained from the distillation of crude oil, which is called petroleum bitumen or distillate bitumen. Bitumen is produced after two stages of crude oil distillation in the distillation tower, in which gasoline and propane are separated from crude oil in the first stage, and bitumen is extracted in the second stage.
Bitumen is a black, paste-like substance that is used in applications such as insulation, moisture, and asphalt construction due to its waterproofing and high adhesion. There are different types of bitumen, including natural bitumen, petroleum bitumen, and tar bitumen, and they have two important properties: adhesion and impermeability to water.
Characteristics of bitumen
Adhesion:
to connect building materials and aggregates.
Water resistance:
It is used as a waterproofing in buildings and dams.
Flexibility:
Tolerating temperature changes without breaking.
Viscosity and fluidity of water:
Indicates the resistance of bitumen to flow, which has high viscosity and is used for bonding asphalt, etc.
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