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 prepare 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, often referred to as asphalt, is classified by its degree of penetration. To determine this grade, tests are conducted to measure both the penetration point and the softening point. As a result, the bitumen is categorized within a penetration range of 80/100, making it suitable for road construction and other infrastructure applications.
Thermoplastic property
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 use for bitumen with penetrating grades?
Usually, bitumen with penetrating grade is manufacturing and product with these standards:
The two principal tests use most frequently to characterize bitumen’s are penetration and softening point. These two tests are use to specify different grades of bitumen.
It should be noted that the amount of bitumen penetration or hardness is obtain 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.
The Bitumen 80/100 and 60/70 are two types of bitumen, which are widely use 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. In simple terms, penetration measures the depth, in tenths of a millimeter, that a standard needle can penetrate a bitumen sample under specific conditions of time, temperature, and load. For example, bitumen with a penetration grade of 80/100 is relatively softer, while bitumen 60/70, with a lower penetration range, is harder and more durable. As a result, each grade is chosen based on the performance needs of different road construction and waterproofing projects.
Viscosity
80/100 has higher viscosity compare 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 compare 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 expose to high temperatures for extend 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 use 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 use 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 use than the other due to factors such as availability of raw materials, climate conditions, and construction practices.
Bitumen prices can vary significantly base 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 bitumen is specially prepared and produced to meet the requirements of road construction projects. As a result, it is widely used in the production of asphalt pavements that offer enhanced performance and durability. In particular, bitumen grade 80/100, with its semi-hard penetration level, is highly suitable for paving applications in both new road construction as well as road repair projects.
This grade is mainly bitumen is use in the construction of warm asphalt on foundations and wearing periods. It should be note that 80/100 bitumen is one of the most widely use bitumen grades and one of the most basic materials in other bitumen products.
| Bitumen 80/100 | Test method | Unit | Specification |
| Specific gravity @ 25 C | ASTM D70 | Kg/cm3 | 1.01/1.06 |
| Penetration @ 25C | ASTM D5 | mm/10 | 80/100 |
| Softening point C | ASTM D36 | C | 42/50 |
| Ductility @25 C | ASTM D113 | cm | 100 Min |
| Loss on heating (Wt)% | ASTM D6 | Wt% | 0.2Max |
| Drop in penetration after heating % | ASTM D5-D6 | % | 26 Max |
| Flash point C | ASTM D92 | C | 250 Min |
| Solubility is CS2 (Wt)% | ASTM D4 | Wt% | 99.5 Min |
| Spot test | A. A. S. H. O. T102 | – | Negative |
Download specification of bitumen 80/100
Download MSDS of bitumen 80/100