During its 91st Annual Meeting in 2016, the Association of Asphalt Paving Technologists (AAPT) held a successful Leading Edge Workshop on fatigue cracking performance methods for asphalt mixtures. AAPT is looking to build off of this workshop by partnering with Asphalt Institute to host a three-part webinar series that will provide a foundational understanding of the techniques that have been developed for quantifying fatigue cracking and a comprehensive review of the laboratory and evaluation methods for capturing and describing fatigue cracking. Techniques covered will include energy-inspired, continuum damage, fracture, and healing methods. Tests will include bulk material testing and notch-based testing.

The second part of the webinar series will provide information on asphalt binder and mixture fatigue cracking tests. For asphalt binders, the repeated loading, double edge notched, and binder fracture energy tests will be reviewed. For asphalt mixtures, the presentation will be subdivided into two sections. The first subsection of asphalt mixture tests will discuss those tests that do not incorporate a notch – including the four-point beam, cylindrical geometry, indirect tension, trapezoidal, overlay, dogbone, and loaded wheel tests. The second subsection of asphalt mixture tests will discuss those tests that do incorporate a notch – including the semi-circular bend, disk-shaped compact tension, single-edge notch beam, and the double edge notch prism tests. Part 2 will finish with brief information on the topics to be covered in Part III of the series.