Viscosity of bitumen mixed with index. Zero equals 150-75 seconds Sibolt-Forl at 25 degrees Celsius. The viscosity of high grade bitumen with index 2 is equal to 200-100 seconds of Sibolite-Forl at 60 degrees Celsius. For more information about High grade bitumen Wholesale Market, visit our official website.
How flammable is bitumen?
The degree of ignition of bitumen refers to the temperature at which, when the temperature of bitumen reaches it, a spark is seen on its surface as the flame approaches its free surface. As you know, pure bitumen, tar and their mixtures are flammable; Therefore, we need to know how much temperature we can heat the bitumen we work with, without the bitumen igniting or burning.
SHELL company is produced in Abadan refinery, which is named in terms of viscosity. The viscosity of these mixed bitumens is in terms of STANDARD TAR VISCOSITY STV at 20 degrees Celsius and is offered in the market from 50/100 to 700/500 mixed bitumen. . In the same series, a type of mixed bitumen with a higher risk called 125 is prepared, the viscosity of which is determined at 40 ° C according to S.T.V.
Chemical building of bitumen:
The chemical structure of bitumen is relatively complex, and studies to date have not yielded a definitive theory of how the chemical structure of bitumen works. On the other hand, the crude oil from which it was derived is also very diverse chemically, due to the different geological conditions under which the oil is formed. The chemical structure of refined bitumen, despite the interactions that take place during distillation. It depends entirely on the primary source of the crude oil involved.
According to this definition, bitumen is a material that is completely contained in sulfur crane. Most bitumens used in road construction have less than 0.1% of insoluble materials in carbon sulfide. This insoluble carbon solute is called Carboid. Carbohydrates have small properties in bitumen, but when bitumen is exposed to high temperatures, it breaks down its molecules, in which case carbide is useful as a determinant of how much the molecule breaks down. The act of breaking down bitumen molecules causes significant changes in its constituents. Gives these morphological changes the performance of bitumen on the road has been identified as harmful. There are different methods for detecting and determining other constituents of bitumen, most of which classify carbon-soluble bitumen into its main component:
1) Cab: except insoluble in carbon tetrachloride
2) Asphaltene: except insoluble in conditions such as light aliphatic hydrocarbons such as petroleum ether.
3) Maltan: except for the solution in the light glory of aliphatic hydrocarbons such as heptane, etc. Malts themselves are divided into two categories: resin and oil. The resin is absorbed by powders such as Faller’s soil if the oil is not absorbed.
This partial bitumen analysis is an almost arbitrary method that divides the components of bitumen into different classes that have different molecular weights. This method is important in distinguishing the components of bitumen and the relationship between them in bitumen properties, especially in its psychological properties.
It should be noted that the compounds of group (d) are usually not present in the bitumen used in road construction. Another interesting and important property of bitumen in road construction is the acidity of bitumen, which plays an important role in the adhesion of bitumen to stone materials. has it . Bitumen acidity varies from source to source. For example, distilled bitumen in the Middle East has less acidity than Venezuelan bitumen. Dear customers, you can visit our website for more information about bitumen price.
Bulk marketing of bitumen in 2020
Since bitumen trading is neither possible nor cost-effective for providing bitumen heating facilities and devices in remote areas, asphalt specialists tried to make the use of cold bitumen in road construction possible and practical. They do not supply it by adding a volatile solvent to pure bitumen. On the other hand, mixed bitumens not only run out, but also have the disadvantage that they must be spread on dry surfaces. Insufficient adhesion will not be achieved. Therefore, Bulk marketing of bitumen in 2020 is possible by our collection.
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