6.3.1. Definition

Try these first

1. 1.

   What is gradation?

   Hint

   Think about how sizes vary in a mixture.

2. 2.

   What type of aggregate gradation maximizes density?

   Hint

   Consider which type has the least voids.

3. 3.

   What does gradation refer to?

   • Distribution of particle sizes
   • Color of aggregates
   • Weight of aggregates

   Hint

   Think about how aggregates are organized.

4. 4.

   True or False: Open graded aggregates are designed to maximize density.

   • True
   • False

   Hint

   Consider the purpose of open graded aggregates.

5. 5.

   You are tasked with designing a roadway expected to face heavy rainfall. Which aggregate gradation would you utilize and justify your choice.

   Hint

   Consider the role of water in road performance.

6. 6.

   Analyze how a faulty gradation can lead to pavement failure over time. What characteristics would you expect to decline?

   Hint

   Think about both immediate and long-term structural integrity.