3.2.1. Physical Properties

Try these first

1. 1.

   What is the maximum size for fine aggregates as per standard classification?

   Hint

   Recall the sieve size for fine aggregates.

2. 2.

   Name two properties that impact workability in aggregates.

   Hint

   Think about how different shapes might fit together.

3. 3.

   What is the primary effect of proper grading of aggregates in concrete?

   • Increases water absorption
   • Minimizes voids
   • Decreases workability

   Hint

   Consider how grading relates to the compactness of the material.

4. 4.

   True or False: Rounded aggregates generally provide better strength than angular aggregates.

   • True
   • False

   Hint

   Think about how the shape affects mixing and structure.

5. 5.

   Design a concrete mix using aggregate with varying porosity levels. Discuss how you will adjust the mix to maintain performance.

   Hint

   Think of how moisture levels directly affect concrete’s strength.

6. 6.

   Evaluate the impact of aggregate shape on handling and performance in a construction project involving high-strength concrete structures.

   Hint

   Consider how strength and workability must be balanced in your evaluation.