When does concrete fails in compression?

Watch out for Concrete Fails

So, when does concrete fail in compression? There are numerous repair and rehabilitation solution if the concrete fails in the compression test. The specific strength of concrete varies depending upon the grade of concrete and its specific gravity. Most of the structures, which use concrete for construction purposes, experience some failure of compression during their early stage of life. However, most of these fail at later stages of life and are not very severe.

The testing is carried out on the floor surface under varying load condition so that the actual compressive strength can be observed. There are several types of tests carried out on concrete, but the most commonly used ones are: tensile strength test, tensile bending test, brittle barrier test and the hydrostatic testing. The tensile strength test helps in determining the compressive strength of a concrete slab under various mechanical conditions. The bending test helps in determining the stress-to-strain curve of concrete. The brittle barrier test helps in determining the ability of concrete to withstand extreme temperatures. And the hydrostatic test determines the changes in the concrete’s volume and surface tension due to changes in temperature.

Once concrete fails in compressive strength, it must be repaired or reconstructed to regain the intended purpose. Without the repairing work, the concrete will continue to deteriorate and fail later. Hence, it is important that the designated compressive strength is maintained throughout the life of the structure. It is very important to know the concrete slump value before commencing the construction of any structure.