Embedded Corrosion Instrument – ECI – is
an electronic corrosion sensor that provides early warning
of conditions that damage steel reinforcement, leading
to cracking, spalling, and other deterioration of concrete
structures. By monitoring five key factors in corrosion,
and by communicating these through a digital network,
the ECI provides comprehensive, real-time information
on structural conditions. This helps facilities managers
to avert crises, save money on maintenance, and build
a detailed record on each structure.
The ECI is designed to monitor bridges, buildings, dams,
erosion control structures, flood control channels,
parking garages, piers, pylons, roadways, and spillways.
A non-destructive evaluation (NDE) device, it gathers
and delivers all data without requiring inspectors to
cut samples, interrupt use of a structure, or even visit
The ECI monitors five key factors in corrosion –
linear polarization resistance, open circuit potential,
resistivity, choloride ion concentration, and temperature.
This provides more comprehensive data than prior generations
of corrosion monitors. It also reveals correlations
among the causes and signs of corrosion, yielding a
fuller, more certain picture of the threat.
The ECI integrates processing electronics with its sensors,
and so can use digital, rather than analog communications.
This eliminates data corruption by electro-magnetic
interference from power lines, radio waves, and cellular
telephones. Digital technology also makes it possible
to connect multiple ECI monitors to a single datalogger,
saving potentially tens of thousands of dollars in support
electronics per project.
With these advances, the ECI has earned success and
acclaim around the world. It has been integrated into
a wide range of structures, in regions as diverse as
Australia, Singapore, and the United States. It has
gained media coverage in Better Roads Magazine, the
MIT Technology Review, and other leading publications.
For its development of the ECI, Virginia Technologies
won the Breakthrough Award from the Virginia Piedmont
sells the Embedded Corrosion Instrument through distributors
• To locate a distributor in your area, or to
enquire about purchasing the ECI system, please click
• To enquire about becoming an ECI distributor,
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