Concrete Corrosion Mapping System

Model: HM-246
Price: $1,675.00
Product Files

The HM-246 Concrete Corrosion Mapping System allows rapid assessment of concrete surfaces for the presence of or tendency for chloride-induced corrosion in reinforcing steel. Operating on the half-cell potential method, this instrument is used on bridge decks, pavement, walls and other structures.

Reinforcing steel in concrete is normally passive to corrosion until chlorides from the environment penetrate the concrete and start a flow of electrical currents. Half-cell measurements indicate corrosion activity using a probe electrically connected to the concrete through a water-saturated sponge. A separate cable is attached to a rebar in the structure, completing the electrical circuit. The potential readings correlate to steel corrosion activity in the vicinity of the probe. Readings can be plotted on paper or on the concrete itself to provide graphic assessment of the structure. A Rebar Locator is recommended to accurately reference bar position.


  • Quickly assesses the existence of or potential for chloride-induced corrosion in reinforcing steel
  • Easily examines bridge decks, pavement, walls and other structures
  • Operates using the half-cell potential method

Included Items:

  • Specialized voltmeter in a protective pouch
  • Copper/copper sulfate electrode
  • Surfactant reservoir
  • Dispensing sponge
  • Separate electrode for overhead readings
  • Two 15in (381mm) extensions
  • Reel with 250ft (76M) of wire
  • Surfactant solution
  • Copper sulfate crystals
  • Operating manual
  • Sturdy plastic case
  • Probe that can attach to a long handle for ceilings


Estimated Shipping Weight 18.0lb (8.16kg)

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Estimated Shipping Weight 18.0lb (8.16kg)
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