2.1. Definition

Try these first

1. 1.

   What is segregation in concrete?

   Hint

   Think about how different materials might behave when mixed.

2. 2.

   What does bleeding refer to in fresh concrete?

   Hint

   Consider the liquid in a mixture settling after being stirred.

3. 3.

   What is segregation?

   • Mixing cement with aggregates
   • Separation of concrete components
   • None of the above

   Hint

   Think about how mixed materials could separate.

4. 4.

   True or False: Bleeding improves the workability of fresh concrete.

   • True
   • False

   Hint

   Consider what happens when water rises to the surface.

5. 5.

   A construction site notices segregation occurring frequently in their concrete mixes. Identify key preventive actions to recommend to the workers.

   Hint

   Think about how materials interact in a mix.

6. 6.

   In high-temperature conditions, bleeding is prevalent in a fresh concrete mix. Discuss how you would alter the batching process to minimize this issue.

   Hint

   Consider how temperature affects setting times.