Bitumen 80/100 is a type of standard grade road bitumen that is prepared during the process of oxidation of the vacuum floor of the bitumen feed which is prepared from the remains of the distillation tower in the vacuum oil refineries in the bitumen production unit, usually from this bitumen as pavement grade bitumen.
This type of bitumen , its degree of penetration and sometimes called asphalt, which is determined by testing the point of penetration and softening ,the range of the point of penetration is between 80/100.
The reason for the importance of penetrating bitumen’s is due to their thermoplastic property, which makes the material soft at high temperatures and hard at lower temperatures.
When determining performance parameters such as adhesion, rheology, durability, this relationship between temperature and viscosity is very effective, and it is important. Therefore, the state of bitumen depends on temperature, and in this case, the relationship between temperature and hardness of bitumen depends on the type of crude oil and its refining method.
Which test and standard are used for bitumen with penetrating grades?
Usually, bitumen with penetrating grade is manufacturing and product with these standards:
The two principal tests used most frequently to characterize bitumen’s are penetration and softening point. These two tests are used to specify different grades of bitumen.
It should be noted that the amount of bitumen penetration or hardness is obtained by measuring the depth that a loaded standard needle penetrates vertically for 5 seconds in the bitumen sample kept at a temperature of 25 degrees Celsius .suddenly it means that in the bitumen penetration test, when the needle sinks 8 to 10 mm in the bitumen, we find out that the penetration value is between 8 and 10 mm.
Bitumen 80/100 and 60/70 are two types of bitumen, which are widely used in road construction and other applications. The main differences between them are:
The numbers “80/100” and “60/70” in the names of these bitumen types refer to their penetration grades, which indicate the hardness of the bitumen. Penetration is the measure of the depth in tenths of a millimeter that a standard needle will penetrate a bitumen sample under specified conditions of time, temperature, and load. Bitumen has a penetration grade of 80-100, which means it is relatively harder compared to bitumen 60/70, which has a penetration grade of 60-70.
80/100 has higher viscosity compared to bitumen 60/70. Viscosity is the measure of a fluid’s resistance to flow. Higher viscosity means the bitumen is thicker and less fluid, while lower viscosity means it is thinner and more fluid.
It is less temperature-sensitive compared to bitumen 60/70. This means that retains its properties and consistency better at high temperatures, making it suitable for hot climate regions where roads are exposed to high temperatures for extended periods of time. Bitumen 60/70, on the other hand, may become softer at high temperatures, which can lead to deformation and rutting of roads.
It is commonly used for areas with high traffic loads and heavy-duty applications such as highways, airports, and ports, where durability and resistance to deformation are crucial. Bitumen 60/70 is typically used for less demanding applications such as residential roads, parking lots, and light-traffic areas.
The availability of 80/100 and bitumen 60/70 may vary depending on the region and local market conditions. In some regions, one type may be more commonly used than the other due to factors such as availability of raw materials, climate conditions, and construction practices.
Bitumen 80/100 prices can vary significantly based on factors such as quantity, delivery location, and contract terms but today price is 400USD in drum and 380USD per ton (April 11 2023)
Density of asphalt 80/100 in kg/m3 is equal to 1009Kg at 25 centigrade.
This grade of it is prepared and produce suitable for road construction and is used in the production of asphalt pavements that have better properties. Bitumen grade 80/100 with a semi-hard penetration grade is suitable for paving in road construction and repair.
This grade is mainly bitumen is used in the construction of warm asphalt on foundations and wearing periods. It should be noted that 80/100 bitumen is one of the most widely used bitumen grades and one of the most basic materials in other bitumen products.
Specific gravity @ 25 C
Penetration @ 25C
Softening point C
Ductility @25 C
Loss on heating (Wt)%
Drop in penetration after heating %
Flash point C
Solubility is CS2 (Wt)%
A. A. S. H. O. T102