Two methods of the Corrosion Test are common namely, the Half Cell Potential Test and the Chloride Test.
The Half Cell Potential Test is a non-destructive test used to determine the extent of rust on the reinforcing steel of a structure using electric currents. The Half Cell Potential Test conducted by RE complies with the ASTM 876-91 standard.
The Chloride Test is a laboratory test to determine the chloride content as chloride is one of the main causes of rust, especially in structures near the oceans or factories. In the testing process, concrete dusts at different depths are first sampled to determine the chloride content. Then, the chloride content from the samples is compared with the standard content.