9.3. Creep of Concrete

Try these first

1. 1.

   What is creep in concrete?

   Hint

   Think about how stress affects materials over time.

2. 2.

   Name one factor that affects creep.

   Hint

   Consider what affects the fundamental properties of concrete.

3. 3.

   What is creep?

   • Immediate strain
   • Gradual strain over time
   • Strain that occurs only at high temperatures

   Hint

   Think about how stress affects materials over extended periods.

4. 4.

   True or False: A higher water-cement ratio leads to less creep.

   • True
   • False

   Hint

   Reflect on the relationship between water content and strength.

5. 5.

   A concrete beam is subjected to a sustained load of 100 kN. It has a water-cement ratio of 0.5 and is 10 years old. Estimate the percentage increase in strain after 5 years.

   Hint

   Refer to typical creep coefficients based on similar concrete conditions.

6. 6.

   Design a concrete mix for a structure that requires minimized creep over a decade. List the key components and their roles.

   Hint

   Think about how material properties interact to affect overall performance.