7.7.1. Segregation during Pumping

Try these first

1. 1.

   What does segregation in concrete refer to?

   Hint

   Think about the mixing process.

2. 2.

   Name one cause of segregation during pumping.

   Hint

   Consider what happens when too much vibration is applied.

3. 3.

   What is a primary cause of segregation in concrete?

   • A. High temperature
   • B. Over-vibration
   • C. Low humidity

   Hint

   Think about the physical effects of shaking or vibrating liquids.

4. 4.

   True or False: Using more water always prevents segregation.

   • True
   • False

   Hint

   Consider how the components interact with each other.

5. 5.

   You are overseeing a project where concrete is routinely segregating during pumping. Propose a multi-faceted solution that addresses both mix design and pumping techniques.

   Hint

   Think about the balance between fluidity and aggregate stability.

6. 6.

   Create a checklist for assessing the risk of segregation before pouring concrete.

   Hint

   Consider all elements that can influence the mix before placement.