MEASURING THE CORROSION RATE
Equipment like the CorroMap uses a galvanostatic pulse principle to establish the corrosion current and therefore the corrosion rate of reinforcing steel.
The method uses a short duration anodic current pulse into the reinforcement galvanostatically from a counter electrode placed on the concrete surface together with a reference electrode.
By utilising the ohmic resistance (electrical resistance), the DC polarisation resistance over time, and the applied current, the corrosion current may be estimated with the Stern Geary equation.
THRESHOLD VALUES
For easy and quick evaluation FORCE Technology uses the following threshold values to categorise the risk of the corrosion rate:
%20vector%20logo.svg)
