Performance Grade Bitumen

Performance Grade (PG) bitumen is a type of bitumen that is graded based on its physical properties, including its high-temperature performance and low-temperature flexibility. The application of PG bitumen typically involves the following steps:

1. Selection of PG grade: The appropriate PG grade is selected based on the climate conditions and traffic volume of the project. This ensures that the bitumen will provide the required performance properties in the given conditions.
2. Mixing: PG bitumen is mixed with aggregate materials to form asphalt concrete, which is used as a surface layer in road construction. The mixing process can be done using a variety of equipment such as a drum mixer, batch plant, or pugmill mixer.
3. Heating: PG bitumen is heated to a liquid state before it can be applied to a surface. The heating process can be done using specialized equipment such as a hot oil heater or a direct-fired heater.
4. Application: PG bitumen is applied to a surface using a variety of methods such as spraying, spreading, or rolling. The application method used will depend on the specific requirements of the project and the equipment available.
5. Compaction: After PG bitumen is applied, it is compacted using specialized equipment such as a roller or vibratory compactor. The compaction process helps to ensure that the PG bitumen adheres well to the surface and provides a durable and long-lasting surface.

Overall, the application of PG bitumen is an important step in the construction and maintenance of roads and other paved surfaces. By providing superior performance properties, PG bitumen helps to ensure the safety and reliability of our transportation infrastructure, even in extreme weather conditions.