An 80/100 grade bitumen refers to a specific type of bitumen used in road construction and other asphalt-related applications. Bitumen, also known as asphalt, is a sticky, black, and highly viscous liquid or semi-solid form of petroleum. It is a crucial component in the construction of roads, highways, and various types of pavement.
The "80/100" grading of bitumen indicates its penetration or consistency. Penetration is a measure of the hardness or softness of the bitumen. It represents the distance in tenths of a millimeter that a standard needle penetrates vertically into a sample of bitumen under specific conditions of time, temperature, and loading.
In the case of 80/100 grade bitumen:
The "80" represents the penetration value (in tenths of a millimeter) when a standard needle is applied to the bitumen sample under specified test conditions. This indicates a moderately hard bitumen.
The "100" represents the time (in seconds) for the standard needle to penetrate the bitumen sample to the specified depth. This value helps to further define the consistency of the bitumen.
In summary, an 80/100 grade bitumen is a bitumen with a moderate level of hardness or softness based on its penetration and consistency values. Different grades of bitumen are used for various purposes in road construction, and the choice of grade depends on factors such as climate, traffic conditions, and the type of pavement being built.