AASHTO T 245-15 (2019) PDF Download

The AASHTO T 245-15 (2019) standard outlines a procedure for measuring the resistance to plastic flow of cylindrical specimens of asphalt mixture. This measurement is performed by applying a lateral load to the specimens using a Marshall apparatus.

The standard is applicable to asphalt mixtures that contain asphalt binder or asphalt cutback, with aggregate sizes not exceeding 25.4 mm (1 inch). The method provides a means to evaluate the plastic flow characteristics of these mixtures.

It is important to note that the standard no longer includes instructions for sample preparation, as this topic is now addressed separately in another standard, R 68. This separation allows for a more systematic and comprehensive approach to sample preparation, taking into account specific factors that may affect the plastic flow behavior of bituminous mixtures.