3.4. Workability

Try these first

1. 1.

   What is workability in concrete?

   Hint

   Think about the mixing and application process.

2. 2.

   Which test is commonly used to measure the workability of concrete?

   Hint

   Remember the cone shape used during the test.

3. 3.

   What is the purpose of the slump test?

   • To measure strength
   • To determine workability
   • To check temperature

   Hint

   Focus on the aspect of concrete's fluidity.

4. 4.

   True or False: Higher water-cement ratios always lead to stronger concrete.

   • True
   • False

   Hint

   Think about the relationship between water and strength.

5. 5.

   A contractor finds that the concrete mix is too stiff and difficult to place. Explain three adjustments that could be made to improve the workability without compromising strength.

   Hint

   Consider how changes in water and admixtures could help.

6. 6.

   During a slump test, the concrete shows excessive fluidity. Discuss potential causes and how to address this issue while maintaining necessary strength.

   Hint

   Think about the balance between components in the mix.