2.1. Considerations

Try these first

1. 1.

   What is segregation in fresh concrete?

   Hint

   Think about what happens when concrete isn't mixed properly.

2. 2.

   Why must we avoid premature setting of concrete?

   Hint

   Consider what happens when concrete hardens too quickly.

3. 3.

   What can cause segregation in fresh concrete?

   • Improper mixing
   • High temperatures
   • Fast transportation

   Hint

   Think about the role of mixing in maintaining concrete quality.

4. 4.

   True or False: Concrete must be transported slowly to prevent segregation.

   • True
   • False

   Hint

   Consider how speed relates to the quality of the concrete.

5. 5.

   You are responsible for transporting concrete to a high-rise construction site during the summer. Outline a strategy considering both the method of transportation and how to mitigate the effects of heat on workability.

   Hint

   Think about both equipment and timing.

6. 6.

   During a project, workers notice segregation occurring in the fresh concrete. What might have caused this, and what corrective actions can you take?

   Hint

   Consider how handling impacts concrete quality.