2.6. Self Desiccation in High Strength Concrete

Try these first

1. 1.

   What is the primary function of a power float?

   Hint

   Think about the tool used for smoothing concrete.

2. 2.

   Why is curing important for concrete?

   Hint

   What keeps concrete hydrated?

3. 3.

   What is the maximum indentation allowed for power floating?

   • 1/4 inch
   • 1/8 inch
   • 1/2 inch

   Hint

   Remember the specific measurements for finishing methods.

4. 4.

   True or False: Curing helps to prevent cracking in concrete.

   • True
   • False

   Hint

   What role does moisture play in the hardening process?

5. 5.

   You have a high-strength concrete mix with a water-cement ratio of 0.30. Explain the challenges you might face and how you would mitigate them?

   Hint

   Think about the water consumption during hydration.

6. 6.

   In a project requiring high-quality concrete finishes, how would you determine when to start the troweling process?

   Hint

   Recall the necessary conditions for the concrete during finishing.