21.4.6. Creep and Shrinkage

Try these first

1. 1.

   Define creep in the context of concrete.

   Hint

   Think about changes that happen over time.

2. 2.

   What is plastic shrinkage?

   Hint

   Focus on the timing after pouring.

3. 3.

   What is creep in concrete?

   • Immediate change in shape
   • Long-term deformation under load
   • Quality of concrete material

   Hint

   Recall our definition of creep.

4. 4.

   True or False: Plastic shrinkage occurs after the concrete has set.

   • True
   • False

   Hint

   Think about when cracks can first appear.

5. 5.

   Consider a concrete beam subjected to a constant load. Over time, how might the effects of creep influence the design of the beam?

   Hint

   Think about what happens to the beam over time.

6. 6.

   You are tasked with designing a new pavement using FRC. What strategies would you implement to minimize plastic shrinkage cracking, and why?

   Hint

   Consider both material choice and environmental factors.