A common method of assessing the corrosion state of reinforcing steel and confirming corrosion control is to measure the steel potential using a reference electrode.
Duoguard Australia distribute a CPT manufactured reference electrode MN15.
The reference electrode is buried in a small hole formed in the concrete surface. This can then be used to measure the steel potential either manually, using a high impedance voltmeter, using a datalogger or via internet connection
The MN15 reference electrode offers significant advantages versus conventional electrodes as it is based on a manganese oxide composition:
- High surface area prevents loss of contact with host concrete
- Chloride free – no release of aggressivesalts
- Excellent polarisation characteristics – stable potential when current is drawn
- Compact unit facilitates simple installation