10.8.1. Superpave Performance Grade (PG) Bitumen

Try these first

1. 1.

   What does 'PG' in Superpave PG stand for?

   Hint

   Think about how performance relates to temperature.

2. 2.

   What does the first number in a PG rating represent?

   Hint

   It's about the heat.

3. 3.

   What does the PG system help with in road construction?

   • Selecting appropriate binders
   • Determining aggregate size
   • Calculating road width

   Hint

   Focus on binder selection aspects.

4. 4.

   True or False: The PG classification indicates the traffic level as well as the climate.

   • True
   • False

   Hint

   Look at the main focus of the PG system.

5. 5.

   A city experiences extreme temperatures, ranging from -15°C to 40°C. Discuss which PG binder would be suitable and why.

   Hint

   Look for a PG rating that covers both extremes.

6. 6.

   Evaluate the importance of binder selection in relation to pavement longevity and maintenance costs.

   Hint

   Consider the long-term implications of a good binder choice.