2.3. Chemical and Physical Hydration

Try these first

1. 1.

   What is the main purpose of curing in concrete?

   Hint

   Think about hydration and water!

2. 2.

   In simple terms, what does chemical hydration involve?

   Hint

   What two materials are interacting?

3. 3.

   What does chemical hydration primarily concern?

   • Water evaporation
   • Water reaction with cement
   • Concrete mixing

   Hint

   Focus on the reactions of materials.

4. 4.

   True or False: Curing is only necessary after concrete has dried.

   • True
   • False

   Hint

   Think about when water is needed.

5. 5.

   Given a high-strength concrete mix with a water-to-cement ratio of 0.30, explain how and why water should be continuously applied during curing.

   Hint

   Consider the consequences of not applying sufficient moisture.

6. 6.

   Identify potential problems that could arise from using excessive water in the mixing process and not managing curing effectively.

   Hint

   Think about the balance between water and strength.