12.2. Fresh Properties

Try these first

1. 1.

   What is flowability in SCC?

   Hint

   Think of how water flows.

2. 2.

   Define segregation in concrete.

   Hint

   What happens if you mix sand and gravel incorrectly?

3. 3.

   What does high flowability in SCC allow for?

   • A. Faster setting times
   • B. Easy filling of molds
   • C. Reduced material costs

   Hint

   Think of the benefit of not having to vibrate the concrete.

4. 4.

   True or False: Segregation results in a stronger concrete mix.

   • True
   • False

   Hint

   Consider the integrity of mixed materials.

5. 5.

   Design a mix for SCC taking into account flowability, passing ability, and segregation resistance. Justify your choices in material selection.

   Hint

   Consider the ratios and properties of the materials involved.

6. 6.

   Evaluate the economic implications of using SCC versus traditional concrete in a high-rise construction project.

   Hint

   Reflect on long-term savings versus upfront costs.