Concrete is a mixture of sand, gravel, cement and water together, moulded into a variety of forms and left to cure over time. Concrete is one of the most versatile construction materials and its quality is crucial if structures are to be safe and meet required standard.
- Fresh Concrete Testing
- Slump test
- Compaction factor
- Hardened Concrete Testing
- Destructuive compressive strength
- Non-destructuive compressive test
- Flexural Strength
- Crack detection microscope
Correct sampling and mixing of fresh concrete is very important in the production of high quality concrete.
This test is used to determine the consistency and workability of fresh concrete.
Figure 31: slump test apparatus
This test is used to determine the compaction factor of concrete in low, medium and high workability
Figure 32: Compaction factor test apparatus
The compressive strength of hardened concrete can be tested using destructive and non-destructive methods.
This test determines the compressive strength of concrete cubes by crushing.
Figure 33: Destructive compressive strength machine
The concrete test determines the quality of concrete in finished structures such as buildings and bridges
Figure 34: Schmidt rebound hammer
This test determines the flexural strength of 100mm and 150mm square section concrete beams.
Figure 35: Mini flexural machine