Concrete Corrosion Mapping System
Cat. #15620
Price $1,300.00
Sample Applications
- Bridge Decks
- Highway Slabs
- Parking Garages
- Concrete Piers & Docks
- Substructures
- Pre-cast Structures
- Foundations
- Reinforced Concrete Pipe
- Warehouse Floors
- Tunnels
General Information
The nature of concrete corrosion is an exchange of energy within different
sections of the reinforcing steel. At the anode, corrosion occurs
and iron ions are released into the electrolyte. The relative
energy levels can be determined in relation to a reference
electrode with a stable electrochemical potential. A high
impedance voltmeter is connected between the reinforcing steel and
a reference electrode placed on the surface of the concrete. The
resulting potential reading on the voltmeter is
an indication of the energy levels (corrosion activity) of the
steel in the vicinity of the reference cell.
Half cell potential measurements serve as an important means of determining the
probability of corrosion activity on the structure's reinforcing
steel. These measurements, which are related to the
electrochemical nature of corrosion, allow an accurate survey to
be performed in a short period of time.
Data from these surveys can be plotted to provide an easy to interpret graphic
picture of the structure. From this plot, as typically shown
below, probable corrosion areas and the total area of the
structure subject to corrosion can be determined.
Typical concrete slab section with steel reinforcement (rebars).
Potential measurements obtained on 4' centers of 24' x 48' panel.