What is Petroleum Bitumen?

Petroleum asphalt refers to the residue oil products directly obtained by the distillation of crude oil often decompression device, and can also be oxidized with the decompression residue oil as raw material, and the asphalt from which the solvent is detached is then moderately oxidized or blended
.
It is the heaviest component from crude oil, is a highly condensed polycyclic hydrocarbon mixture, has good adhesion, insulation, impermeability, and can resist the erosion of many chemical drugs, widely used in road engineering, construction engineering, hydraulic engineering, protective coatings and soil conservation, soil
and soil improvement.
The performance of asphalt is mainly expressed in terms of
softening point, needle penetration and elongation.
The softening point indicates the heat resistance of the asphalt, and the higher the softening point, the better
the heat resistance.
The needle penetration degree reflects the rheological properties of the asphalt, in order to make the road asphalt and sand and gravel bond closely, high needle penetration of asphalt is required; As a special asphalt for anti-corrosion, it is necessary to have a low penetration of asphalt to prevent loss
.
Extension indicates the tensile and plasticity of asphalt, and the road asphalt requires the highest extension to ensure that the road surface will not be crushed by vehicles at low temperatures and cracks
will occur.
Asphalt can be divided into ordinary asphalt, road asphalt, building asphalt, special asphalt according to the use, of which the amount of road asphalt is the largest
.