6.4. Specifications for Road Aggregates (IRC/MORTH)

Try these first

1. 1.

   What is the maximum crushing value for surface course aggregates?

   Hint

   Recall the specified limit based on road layers.

2. 2.

   What should the water absorption value not exceed?

   Hint

   Think about how absorption affects performance.

3. 3.

   What is the crushing value limit for surface course aggregates?

   • 25%
   • 30%
   • 35%
   • 40%

   Hint

   Refer to the specification for the surface layer.

4. 4.

   True or False: The impact value for base course aggregates is ≤ 40%.

   • True
   • False

   Hint

   Revisit the specifications for different layers.

5. 5.

   Calculate the impact on road durability if the crushing value of the aggregates used exceeds the specified limits.

   Hint

   Think about how performance relates to longevity.

6. 6.

   Propose a solution to help an aggregate sample that has high water absorption values.

   Hint

   Reflect on materials' properties and how they can be improved.