3.2.2. Mechanical Properties

Try these first

1. 1.

   What is the crushing value of an aggregate?

   Hint

   Think about how much weight the aggregate can hold.

2. 2.

   Name two properties that indicate aggregate toughness.

   Hint

   Consider what happens during sudden forces.

3. 3.

   What does the crushing value of an aggregate measure?

   • Tensile strength
   • Compressive load resistance
   • Flexural strength

   Hint

   Focus on what happens under weight.

4. 4.

   True or False: A lower impact value indicates higher toughness.

   • True
   • False

   Hint

   Consider what happens during impact.

5. 5.

   Evaluate the consequences of using aggregates with high flakiness and elongation in a structural application.

   Hint

   Consider how different shapes fill space.

6. 6.

   Formulate a plan for selecting aggregates for a new highway project considering both impact and abrasion values.

   Hint

   Think about conditions the highway will face.