1.1. Definition

Try these first

1. 1.

   What is fresh concrete?

   Hint

   Think about the different components mixed together.

2. 2.

   Define segregation in concrete.

   Hint

   Consider what happens to heavy materials when mixed with lighter ones.

3. 3.

   What is segregation in concrete?

   • Separation of aggregates
   • Adding water to concrete
   • Using admixtures

   Hint

   Think about what happens in the mix when components don't blend well.

4. 4.

   True or False: Bleeding is beneficial for the strength of concrete.

   • True
   • False

   Hint

   Recall the issues that arise when water rises to the surface.

5. 5.

   You are responsible for a concrete pour scheduled in hot weather. Discuss how you would manage the issues of slump loss and exposure to bleeding.

   Hint

   Think about how environmental conditions affect the chemistry of concrete.

6. 6.

   A construction site reports excessive aggregates settling during placement. What strategies can be implemented to mitigate segregation?

   Hint

   Analyze what physical actions taken on site can help maintain mix consistency.