On December 16, AASHTOWare will host a webinar regarding the importance of the “resilient modulus” characteristic within the AASHTOWare Pavement ME Design or PMED software program; a next generation pavement design package that analyzes various rehabilitation and preventive maintenance strategies for both jointed plain concrete pavement (JPCP) and continuously reinforced concrete pavement (CRCP).
[Above image by AASHTO]
Since 1985, AASHTOWare – a division of the American Association of State Highway and Transportation Officials – has been the premier source of innovative technology solutions for the transportation community.
This webinar focuses on why resilient modulus is a critical input for pavement design; largely because it quantifies the stiffness of unbound materials – such as subgrade and base layers – under repeated traffic loading, which is essential for predicting pavement performance in mechanistic-empirical design.
Those resilient modulus characteristics are used in PMED to calculate pavement responses, which are then in turn used to predict distresses such as rutting and cracking. The value can be determined through laboratory triaxial tests (AASHTO T-307) or estimated from field tests like falling weight deflectometer back-calculations or soil properties.
The resilient modulus value is also dependent on soil moisture content and density or compaction. Resilient modulus is also stress-dependent, meaning its value changes based on the “stress-state” within the pavement structure.
Thus, the use of resilient modulus in PMED requires knowledge of in-situ stresses to determine the appropriate value to use for a specific location and loading condition.
To register for this webinar, click here.
AASHTO
Webinar: Lane-Based Oversize Truck Routing in Oregon
December 5, 2025
AASHTO
