Non-destructive Testing (NDT) may be undertaken depending on the structural condition of the building. Following is a list of NDT, which are commonly undertaken for RCC buildings and what they indicate:

1. Ultrasonic Pulse Velocity Test … Integrity/ Denseness of Concrete

2. Rebound Hammer Test … Surface Hardness of Concrete

3. Half Cell Potential Test … Probability of Corrosion

4. Carbonation Test … Depth of Carbonation of Concrete

5. Core Test … Compressive Strength of Concrete

6. Chemical Analysis … Chloride (Corrosion of Rebars), Sulphate (Deterioration of Concrete), pH (Alkalinity of Concrete)

7. Cement Aggregate Ratio … Indicative of Concrete Mix


However, which tests should be undertaken for a particular RCC structure and the no. of its testing points should be decided by the Consultant (Auditor).