What is bitumen
Bitumen has long been a familiar word for Iranians in our country.
In folk harvesting (bitumen is a black, stinky and sometimes unpleasant material that has two distinct properties: adhesion and sealing. It is derived from petroleum and is used in the preparation of asphalt or bitumen).
From the point of view of experts (a group of materials having a dark or dark (solid, semi-solid or viscose) adhesion with a natural or manufactured origin, the major constituents of which are high molecular weight hydrocarbons and soluble in carbon disulfide Are).
Bitumen Types: Because of the first importance of bitumen we define refinement bitumen.
The bitumens obtained directly from the distillation tower in the refinery vacuum or briefly aerated are called soft bit or pen grade and are named based on the degree to which the bitumen penetrates between them. For example, bitumen is 60/70 bitumen with a permeability of between 60 and 70 mm.
B) Blown Bitumen:
Bitumen is a solid that is usually solid at normal temperatures. Asphaltic materials are bituminous due to the blowing of polymer air and they are called “Rubberized Bitumen” bitumen. Bits of 90/15 and 100/40 are also in the bitumen family.