3.4. Effects

Try these first

1. 1.

   What is segregation in concrete?

   Hint

   Think about how aggregate sizes might cause mixing issues.

2. 2.

   What does slump loss indicate?

   Hint

   Consider the time factor after mixing.

3. 3.

   What is the main cause of segregation in concrete?

   • Poor mix design
   • High temperature
   • Lack of water

   Hint

   Consider what factors influence the mixing process.

4. 4.

   True or False: Re-tempering can improve the strength of placed concrete.

   • True
   • False

   Hint

   Think about the effects of adding water to a mix that's starting to set.

5. 5.

   A construction site experiences severe slump loss due to high temperatures. Suggest a comprehensive plan to mitigate this issue.

   Hint

   Consider both environmental and mix modifications.

6. 6.

   Discuss the potential long-term effects of improper mixing techniques that lead to significant bleeding and segregation.

   Hint

   Analyze how these issues might affect overall performance.