6.5.3. Impact Value Test

Try these first

1. 1.

   What is the main purpose of the Impact Value Test?

   Hint

   Think about what happens to roads under heavy vehicles.

2. 2.

   What does a lower impact value indicate?

   Hint

   Consider toughness and durability.

3. 3.

   What is the acceptable impact value for surfacing materials?

   • 20%
   • 30%
   • 40%

   Hint

   Refer to standard specifications in the test guidelines.

4. 4.

   True or False: The Impact Value Test is detailed in IS 2386.

   • True
   • False

   Hint

   Think about where to find testing standards.

5. 5.

   If aggregate A has a maximum impact value of 25% and aggregate B has an impact value of 35%, which should be selected for a heavy traffic highway and why?

   Hint

   Compare the properties of both aggregates.

6. 6.

   Explain how the results of the Impact Value Test can influence the overall lifespan of a pavement structure.

   Hint

   Consider the long-term effects on infrastructure and costs.