8.3. Laboratory Tests on Concrete

Try these first

1. 1.

   What is tested during the compressive strength test?

   Hint

   Think about the load requirement for structures.

2. 2.

   What does the split tensile strength test measure?

   Hint

   Consider why tensile properties might be important.

3. 3.

   What is the primary purpose of the compressive strength test?

   • To measure the tensile strength
   • To assess load-bearing capacity
   • To evaluate the workability

   Hint

   Think about what happens when load is applied to concrete.

4. 4.

   The split tensile strength is important for understanding which property of concrete?

   • True
   • False

   Hint

   Recall that concrete is not as strong in tension.

5. 5.

   A concrete mix passed its compressive strength test at 28 days with an average strength of 35 MPa. If it were designed for a structural element requiring 40 MPa, discuss potential actions for the project.

   Hint

   Consider what it means for a concrete mix to be suitable for specific loads.

6. 6.

   Discuss how the sampling method may influence the acceptance criteria in quality control for concrete mixtures.

   Hint

   Think about how random or biased sampling impacts outcomes.