Penetrationgrade
Penetrationgrade refers to a classification system used for asphalt binders, specifically relating to their resistance to deformation at elevated temperatures. This grading system is crucial in determining the suitability of an asphalt binder for different climates and traffic loads. The primary method for determining penetration grade is the penetration test, which measures how deeply a standard needle penetrates a sample of asphalt binder under specific conditions of temperature, time, and load.
The penetration test yields a numerical value, expressed in tenths of a millimeter, indicating the binder's
Asphalt binders are typically graded using the "penetration grading system" as a number followed by a "P",