The portable, handheld GalvaPulse evaluates the corrosion rate of reinforcement by measuring polarization resistance using the galvanostatic pulse technique where a current pulse is imposed on the reinforcement from a counter silver chloride reference electrode (Ag/AgCl) placed on the concrete surface.
The reinforcement is polarized in the anodic direction compared to its free corrosion potential, Ecorr. The resulting change of the electrochemical potential of the reinforcement is recorded as a function of time. The polarization resistance of the reinforcement is calculated by curve fitting of this data and by means of the Stern-Geary equation and Faraday’s law, the corrosion rate is estimated.

Corrosion rate test for reinforced concrete.

• Monitoring corrosion activity in reinforced concrete structures
• Service life estimation
• Evaluating the efficiency of corrosion arresting measures such as application of inhibitors, membranes, electrochemical removal of chlorides, concrete realkalinization, etc.
• Condition surveys of suspect reinforced structures, especially structures in wet environments where the classic half-cell potential mapping may provide misleading or insufficient information
• Measuring corrosion activity in repaired areas

Corrosion rate test for reinforced concrete.

• Reliable evaluation of reinforcement corrosion in anaerobic concrete environment
• Lightweight, handheld equipment, easy to operate
• Kit includes a calibration box and a check concrete block with embedded bars
• Easy-to-use software for reporting test results in 2D or 3D graphics
• Two operation modes:

         (1) only for half-cell potentials and electrical resistance (1 to 2 s/test)

         (2) for corrosion rate, half-cell potentials and electrical resistance (5 to 10 s/test).

• The first mode is normally used to identify the anodic and cathodic areas, while the second mode is used in anodic areas, where corrosion rate is a decisive parameter to be measured
• Suitable for testing on rough or curved surfaces
• Uses Ag/AgCl (silver / silver chloride) reference electrode
• Storage capacity: 20,000 records
• Current pulse generated: 5 to 400 mA from 1 to 20 seconds
• Pulse guard ring diameter: 70 mm

GalvaPulse-5000 Kit

Includes:

Item	Order #
Handheld computer with pulse generator	GP-5010
Calibration unit for pulse generator	GP-5020
Measuring cell with 3 meter cable	GP-5031
Sponge for measuring cell	GP-5040
Reinforcement locator	GP-5050
Reinforcement conductivity meter	GP-5060
Cable for data transfer to PC	GP-5070
Measuring cable	GP-5080
Two adjustable reinforcement clamps	GP-5090
Two reinforcement adaptors	GP-5100
12 mm and 18 mm drill bits	GP-5110
10 mm Allen key	GP-5120
Sponge for grinding of electrode rings	GP-5130
Hammer and chisel	GP-5140
Measuring tape and chalk	GP-5150
GalvaPulse software for data viewing/reporting	GP-5160
User Manual	GP-5170
Attaché case	GP-5180
Cable drum with 15 meters of cable (a)	GP-5190
Check block with embedded a corroding black steel bar and a stainless steel bar  (b)	GP-5200

• Technical datasheet
• Publications
• More documentation available upon request.

ASTM C876 – 15 Standard Test Method for Corrosion Potentials of Uncoated Reinforcing Steel in Concrete.