AASHTO T 195-18 PDF Download

The AASHTO T 195-18 standard provides a method for determining the degree of particle coating in bituminous-aggregate mixtures. The standard aims to measure the percentage of coarse aggregate particles that are completely coated. By determining the coating percentages at different mixing times, it is possible to establish the minimum mixing time required to achieve satisfactory coating of the aggregate for specific conditions.

This method is applicable to mixtures that contain aggregate with a maximum nominal size smaller than 38 mm (1½ in). The standard ensures that the bituminous-aggregate mixtures meet the coating requirements necessary for proper performance and durability. Compliance with this standard can contribute to producing high-quality bituminous-aggregate mixtures that are suitable for use in various construction applications.