5.2.1. Physical Properties

Try these first

1. 1.

   What is the main advantage of angular aggregates?

   Hint

   Think about the shape and how it connects with others.

2. 2.

   Define specific gravity in relation to aggregates.

   Hint

   Relate it to weights and proportions.

3. 3.

   What impacts the workability of concrete?

   • Aggregate Size
   • Cement Type
   • Water Temperature

   Hint

   Recall how sizes interlock.

4. 4.

   True or False: Rough textures in aggregates lead to weaker bonding with cement.

   • True
   • False

   Hint

   Think about how rough surfaces work.

5. 5.

   Given a set of aggregates with a size distribution and a known bulk density, calculate the required volume of paste needed to fill voids in a concrete mix.

   Hint

   Consider how void spaces determine paste requirements.

6. 6.

   Explain what adjustments you would make to a mix if the bulk density was found to be lower than expected.

   Hint

   Think about how density impacts material requirements.