3.1. Objective

Try these first

1. 1.

   What is the primary objective of the compressive strength test?

   Hint

   Think about what happens when you apply too much force.

2. 2.

   What type of specimens are used for tensile strength tests?

   Hint

   Remember the shape used in the split-tensile test.

3. 3.

   What is the main objective of the compressive strength test?

   • To measure tensile forces
   • To determine the maximum compressive load
   • To evaluate bond strength

   Hint

   Think about what the test measures directly.

4. 4.

   True or False: Flexural strength tests are primarily concerned with bending resistance.

   • True
   • False

   Hint

   Consider the applications of concrete in structures like beams.

5. 5.

   Given the dimensions of a concrete cube 150 mm on each side, calculate its compressive strength if it bears a maximum load of 450 kN before failure.

   Hint

   Remember to convert kN to N and mm² when needed.

6. 6.

   A structural beam has a span length of 700 mm, width of 150 mm, depth of 200 mm, and it fails at a load of 12 kN under center-point loading. Calculate its flexural strength.

   Hint

   Make sure to focus on using consistent units throughout.