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what is Bitumen

Bitumen is an oil based substance. It is a semi-solid hydrocarbon product produced by removing the lighter fractions (such as liquid petroleum gas, petrol and diesel) from heavy crude oil during the refining process.
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Types of Bitumen

The bitumen types regarding its generation source bitumen can be classified into three categories:
natural, petroleum asphalts, coal tar pitches.

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Natural Bitumen

natural asphalt or Natural bitumen is similar to hard petroleum asphalt and is often called a natural asphalt, asphaltite, uintaite, or asphaltum.

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Bitumen Laboratory

Laboratory testing and analytical services from SGS – designed for petroleum, natural gas, and petro-chemical operations.

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Penetration Bitumen Grade 70/90

Bitumen grade 70/90 is a premium brand that is dark brown or black color similar to cement-shape semi-solid or viscous liquid form produced by the non-destructive refining of crude oil during petroleum refining.
The exact chemical composition of bitumen is dependent on the chemical complexity of the original crude oil and the manufacturing process. Bitumen Grade 90/130 has mechanical properties as below table.

Properties	specification		Test Method
Properties	70#	90#	Test Method
Penetration (25°C, 100g, 5s), 0.1mm	60-70	80-100	ASTM D5 / GB T4509
Ductility (25°C), cm	≥150	≥150	ASTM D113 / GB T4508
Softening Ponit, °C	49-56	45-52	ASTM D36 / GB T4507
Solubility (in C2HC13), %	≥99	≥99	ASTM D4 / GB T11148
Flash Point (Open Cup Method), °C	≥260	≥260	ASTM 92 / GB T267
Wax content, %	≤3	≤3	SH T0425

BITUMEN VS ASPHALT
What’s the difference between Bitumen and Asphalt?
Should I use Bitumen or Asphalt?
Bitumen is actually the liquid binder that holds asphalt together. The term bitumen is often mistakenly used to describe asphalt.
A bitumen-sealed road has a layer of bitumen sprayed and then covered with an aggregate. This is then repeated to give a two-coat seal.
Asphalt is produced in a plant that heats, dries and mixes aggregate, bitumen and sand into a composite mix.
It is then applied through a paving machine on site as a solid material at a nominated or required thickness, relative to the end use.
Asphalt results in a smoother and more durable surface than a bitumen-sealed road.