15. Quality Control of Fresh Concrete on Site

Try these first

1. 1.

   What is the purpose of visual inspection in concrete quality control?

   Hint

   Think about what visible signs indicate quality.

2. 2.

   What is the slump test used for?

   Hint

   Consider how a change in water content would affect concrete workability.

3. 3.

   What does the slump test measure?

   • A) Concrete strength
   • B) Workability
   • C) Temperature

   Hint

   Think about how well the concrete can be worked during placement.

4. 4.

   True or False: Visual inspections are often the first step in quality control of fresh concrete.

   • True
   • False

   Hint

   Recall what comes before conducting tests.

5. 5.

   You find that the slump test consistently shows a drop below the acceptable range. Discuss the potential implications and corrective action plans.

   Hint

   Think about how variations in materials can affect results.

6. 6.

   A contractor is mixing concrete in varying conditions every day but taking samples at the same frequency. What issues might arise and how can this be resolved?

   Hint

   Consider how environmental factors can change the mix's behavior.