3.1. Definition

Try these first

1. 1.

   What is fresh concrete?

   Hint

   Think about its state before it hardens.

2. 2.

   Define workability.

   Hint

   Consider how easily you can mix and place it.

3. 3.

   What is fresh concrete?

   • Concrete before it hardens
   • Concrete after setting
   • Concrete mixed with water

   Hint

   Think about its stage before becoming solid.

4. 4.

   True or False: Higher water content always increases the strength of concrete.

   • True
   • False

   Hint

   Consider the balance needed in mixtures.

5. 5.

   A contractor faces high temperatures during a concrete pour, affecting workability. What measures can be taken to mitigate this issue?

   Hint

   Consider how other materials behave under heat as well.

6. 6.

   Consider a concrete mix with a very high water-cement ratio. What implications does this have on the end product, specifically regarding strength and durability?

   Hint

   Think about how the composition affects a material's properties.