Half Cell Potential & Carbonation Test
Implementation :
These tests are used to assess the probability of corrosion in reinforcement. HCP Tests are done in accordance with ASTM C876 standard.
Methodology for Half Cell Potential:
- Identify test location & drill a hole in the concrete to reach the reinforcement.
- Establish electric contact with the reinforcement.
- Place the half cell at various locations on the concrete surface & measure voltage in the voltmeter.
- Correlate the obtained voltages to probability of corrosion as per ASTM standard
Procedure for Carbonation Tests:
- Identify test location & drill a hole in the concrete to reach the reinforcement.
- Inject chemical & insert steel rod
- The color change determines till what depth carbonation has taken place Carbonation tests can also be done on extracted cores by applying the chemical on the core and measuring the depth till which the carbonation has taken place.