https://www.ultratechcement.com/for-homebuilders/home-building-explained-single/planning/test-the-compressive-strength-of-concrete - The right concrete mix is very important to build a strong home. Which is why, it is important to check your concrete mix before using it. Hence, concrete testing needs to be done. Concrete testing is of 2 types - before casting and after setting. Let's understand how the compressive strength of concrete is tested.