Controlled Concrete for Mix Design Testing

Controlled concrete is the type of concrete in which preliminary tests are conducted to determine the mix design. The mix design of concrete is crucial to ensure that the desired properties of strength, durability, workability, and economy are achieved. The mix design process involves selecting suitable proportions of cement, aggregates, water, and admixtures to obtain the desired properties of the concrete.

Tests Performed for Mix Design

Several tests are conducted on controlled concrete to determine its properties and suitability for the intended application. The tests include:

1. Slump Test: This test measures the workability of the concrete by determining the slump of the concrete mix.

2. Compressive Strength Test: This test determines the strength of the concrete by applying a compressive load to a concrete cylinder.

3. Flexural Strength Test: This test determines the bending strength of the concrete by applying a load to a concrete beam.

4. Water Absorption Test: This test determines the water absorption capacity of the concrete.

5. Chloride Ion Penetration Test: This test determines the resistance of the concrete to chloride ion penetration.

Conclusion

In conclusion, controlled concrete is the concrete in which preliminary tests are performed to determine the mix design. The mix design process involves selecting suitable proportions of cement, aggregates, water, and admixtures to obtain the desired properties of the concrete. Several tests are conducted on controlled concrete to determine its properties and suitability for the intended application. These tests include the slump test, compressive strength test, flexural strength test, water absorption test, and chloride ion penetration test.