The publications division of the American Association of State Highway and Transportation Officials recently released a new pavement publication supplement for highway engineers.

AASHTO’s Mechanistic-Empirical Pavement Design Guide, 3rd Edition, 2021 Supplement includes an updated top-down cracking fatigue model employing Paris’ Law of crack propagation for generating mechanistic responses.

It also includes predictions for both area of longitudinal cracking and average crack depth, both of which improve the overall MEPDG methodology for predicting fatigue cracking initiated at the surface of an asphalt pavement.

To order the new reference guide via the AASHTO Store, click here.