Bitumen

  • Penetration Graded Bitumen

    Penetration Graded Bitumen

    Penetration Grade Bitumen is a standard bitumen usually used as a Paving Grade Bitumen essential for road construction and for the production of asphalt pavements with superior properties, and it’s very important once it bounds the aggregates and creates a unique cohesion and stability to the bituminous mix.

  • Performance Graded Bitumen

    Performance Graded Bitumen

    Performance Grade (PG) Bitumen is bitumen which is graded based on its performance at different temperatures. In the Superpave grading system, binders are classified according to their performance in extreme hot and cold temperatures and are called performance grade (PG) bitumen. The main purpose of grading and selecting asphalt binders using the PG system is to make certain that the binder has the appropriate properties for environmental conditions in the field. PG asphalt binders are selected to meet expected climatic conditions as well as traffic speed and volume adjustments. Therefore, the PG system uses a common set of tests to measure the physical properties of the binder that can be directly related to the field performance of the pavement at its service temperatures by engineering principles. It is one of the most important changes introduced in Super Pave that acceptance limits are the same but have to be met at specific pavement temperatures and traffic conditions.

  • Soluble Graded Bitumen

    Soluble bitumen is a mixture of bitumen and a suitable solvent (e.g. kerosene or gasoline). The type and quality of soluble bitumen depend on the quality of the original pure bitumen, the type of solvent, and the amount of solvent. This bitumen is liquid at room temperature or liquefied with a little heat.
    Soluble bitumen is used in various types of paving asphalts. The setting or hardening rate of this type of bitumen depends on the type of solution.
    Lack of access to bitumen heating equipment, decomposition of bitumen at high temperatures, cooling of bitumen during operation, the impossibility of its penetration into porous minerals, the need for workers’ safety, fire, and time-consuming cause soluble bitumen to be used in some cases.
    Soluble bitumen is used in road construction for surface coatings, infiltration, cold factory asphalt, or on-site mixes.