15.6. Superpave Performance Prediction Models

Try these first

1. 1.

   What does the Rutting Model predict?

   Hint

   Think about what happens to roads under vehicles.

2. 2.

   What kind of weather impact does the Thermal Cracking Model address?

   Hint

   Consider what happens to materials when it gets extremely cold.

3. 3.

   What does the Rutting Model primarily focus on?

   • Permanent deformation from traffic
   • Temperature impacts on asphalt
   • Cost of pavement materials

   Hint

   Remember the effects of heavy traffic on roads.

4. 4.

   True or False: The Fatigue Cracking Model is used to predict stress from low temperatures.

   • True
   • False

   Hint

   Think about what each model specifically addresses.

5. 5.

   Design an asphalt mix for a highway in a region with high traffic and cold winters. Consider all three Superpave models in your recommendations of material properties.

   Hint

   Balance all three aspects based on anticipated environmental conditions.

6. 6.

   Evaluate a pavement section that has experienced extensive rutting and cracking. Using the Superpave models, explain how you would assess and propose rehabilitations for the section.

   Hint

   Investigate specific failures and map out a holistic solution based on predictive modeling.