Bitumen is solid,semi-solid or viscous hydrocarbon with colloidal structure which is brown to black in colour.It is obtained by vacuum distillation of oil residues from from atmospheric distillation of crude oil.Bitumen is often referred to as asphalt and is primarily used for surfacing of roads and for roofing materials.this category includes fluidised and cut back bitumen.
Native Asphalt or natural bitumen.
There are a bunch of that affected by climatic factors and overtime and naturally created and used without distillation methods and in terms of composition and properties are very diverse.
Coal tar pitches.
Black and hard materials that are residues of coal tar destillation.they have new luster level and during heating melts with rapid loss of viscosity and fusion happens through their production method depend.
Petroleum Bitumens.
Those are bunch of bitumens that crude oil is their origin,these are solid and semi solid bitumens that obtained directly from crude oil destillation or some additional operations such as blowing air and in compare of the other types of bitumens have more applications and higher usages.Bitumens typically used in two areas of road construction and insulation.About 90% of bitumen production used in road construction area and insulation consumptions allocated only 10% of bitument consumption to itself.
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