7.2. Workability Tests of Fresh Concrete (As per IS Standards)

Try these first

1. 1.

   What is the purpose of the slump test?

   Hint

   Think about how the concrete settles.

2. 2.

   Name one type of slump.

   Hint

   Consider what happens when the cone is removed.

3. 3.

   What does the slump test primarily measure?

   • Temperature
   • Flowability
   • Density

   Hint

   Focus on what happens to the concrete after the test.

4. 4.

   True or False: The Vee-Bee test is effective for high slump concrete.

   • True
   • False

   Hint

   Think about the type of concrete the test is designed for.

5. 5.

   A construction site is using a concrete mix that frequently shows shear slump during testing. What are possible adjustments that can be made to improve the mix's cohesiveness?

   Hint

   Consider what changes affect cohesiveness and cohesion.

6. 6.

   During a compacting factor test, the weight of the partially compacted concrete was found to be significantly lower than expected. What does this imply about the concrete's workability, and what steps should be taken?

   Hint

   Think about the relationship of weight in compacted versus loose concrete.