8.2. Field Tests on Concrete

Try these first

1. 1.

   What does the slump test measure?

   Hint

   Think about how concrete behaves when mixed.

2. 2.

   Name one type of slump.

   Hint

   Recall the categories defined by how the concrete behaves during the test.

3. 3.

   What does the slump test indicate?

   • Water content
   • Workability
   • Aggregate size

   Hint

   Focus on what workability refers to in concrete.

4. 4.

   True or False: A collapse slump indicates good workability.

   • True
   • False

   Hint

   Recall the definitions of each type in the slump test.

5. 5.

   A construction site has received a concrete mix, and the slump test shows a shear slump. What steps should the quality control manager take, and what could be the potential implications if this mix is used?

   Hint

   Consider the importance of mix consistency and what effects not addressing it could cause.

6. 6.

   During a project, a team uses the flow table test, and the results suggest excessive spread. How should the team adjust the concrete mix design?

   Hint

   Think about how all mix components interact to affect flow.