3.3. Maximum Nominal Size of Aggregate

Try these first

1. 1.

   What is the maximum nominal size of aggregate typically used in concrete?

   Hint

   Think about the sizes mentioned in our discussion.

2. 2.

   How does aggregate size affect workability?

   Hint

   Consider how size impacts the mixing process.

3. 3.

   What is a typical maximum nominal size for coarse aggregates used in concrete?

   • 5 mm
   • 20 mm
   • 30 mm
   • 60 mm

   Hint

   Think about the common sizes discussed.

4. 4.

   True or False: Smaller aggregates always provide better durability than larger aggregates.

   • True
   • False

   Hint

   Recall the factors influencing durability.

5. 5.

   Analyze how using a 10 mm maximum nominal aggregate size versus a 40 mm size might affect a concrete mix intended for a high-load-bearing structure.

   Hint

   Consider how aggregate size affects load distribution and void spaces.

6. 6.

   Evaluate the cost-benefit ratio of selecting smaller aggregates for a project in a severe exposure environment versus using larger aggregates in a mild exposure environment.

   Hint

   Think about the long-term implications of material choices on project budgets.