3.7.1. Surface Texture

Try these first

1. 1.

   What are smooth aggregates?

   Hint

   Think about aggregates you see in nature that are usually round.

2. 2.

   Provide an example of a rough aggregate.

   Hint

   Consider aggregates created through crushing.

3. 3.

   Smooth aggregates lead to:

   • A higher strength
   • A lower bond with cement
   • Better workability

   Hint

   Recall how these aggregates feel.

4. 4.

   True or False: Rough aggregates typically provide lower concrete strength.

   • True
   • False

   Hint

   Think about how their texture affects bonding.

5. 5.

   Consider a scenario where you are tasked with designing concrete for a decorative sidewalk. Would you choose rough or smooth aggregates, and why?

   Hint

   Focus on decoration versus structural strength.

6. 6.

   A construction project requires concrete that must withstand heavy loads. Discuss how you would approach the aggregate selection, factoring surface texture.

   Hint

   Think about what properties are critical under heavy loads.