8.4. Shrinkage and Cracking

Try these first

1. 1.

   What is shrinkage in concrete?

   Hint

   Think about how concrete's volume changes over time.

2. 2.

   Name one type of shrinkage in concrete.

   Hint

   Remember the two categories we discussed.

3. 3.

   What is autogenous shrinkage?

   • A. Shrinkage due to moisture loss
   • B. Shrinkage due to hydration
   • C. A method of curing

   Hint

   Think about what happens when water is absorbed in the concrete.

4. 4.

   True or False: Adequate curing can help prevent thermal cracking in concrete.

   • True
   • False

   Hint

   What happens to a plant without water?

5. 5.

   Design a mix that minimizes both autogenous and drying shrinkage. What would you include?

   Hint

   Think about how these components interact with moisture and tensile strength.

6. 6.

   Describe a scenario where rapid thermal changes might impact concrete quality. How would you address this?

   Hint

   Focus on temperature management during curing.