6.1. Compressive Strength Tests

Try these first

1. 1.

   What does compressive strength indicate?

   Hint

   Consider what happens when you apply force to concrete.

2. 2.

   Name one method used to test compressive strength.

   Hint

   Think about different shapes used in tests.

3. 3.

   What is the primary purpose of conducting compressive strength tests?

   • To determine water absorption
   • To assess load-bearing capability
   • To check for color

   Hint

   Remember, it's about how concrete responds under pressure.

4. 4.

   True or False: The cube test can be performed at any stage of the construction process.

   • True
   • False

   Hint

   Think about the curing schedule.

5. 5.

   A construction site pours concrete in temperatures below 5°C. Discuss the implications of this choice and propose a testing schedule to account for potential strength delays.

   Hint

   Think about how temperature affects hydration.

6. 6.

   A batch of concrete used for a bridge construction is tested and shows its compressive strength at 28 days is significantly below expected values. What steps should be taken next?

   Hint

   Review what could cause strength variations in concrete.