Corrosion of reinforcement steel is on of the main durability issues for concrete structures, especially in coastal areas and in countries where de-icing salt is regularly used. The SensCore system is a Structural Health Monitoring System, dedicated to the monitoring of corrosion in reinforced concrete structures, is a wireless sensor network, designed to detect and predict the onset of steel corrosion in concrete. The system consists of sensors, dataloggers and a measurement hub that concentrates the data from several dataloggers and transmits it to a central database, where it can be accessed by the authorized users.

Wireless Corrosion Monitoring Sensor System for Reinforced Concrete Structures

SensCore Wireless Corrosion Monitoring Sensor System for Reinforced Concrete Structures

The wireless corrosion and humidity sensors are able to measure several parameters, which are critical to evaluate the present and future risk of rebar corrosion in concrete. In particular the corrosion current and the concrete humidity are measured at several depths between the concrete surface and the rebar depth, to analyze the progression of the corrosion front as well as evaluate the performance of hydrophobic coatings or waterproof membranes.

The wireless corrosion and humidity sensors are extremely simple to deploy and can transmit their data wirelessly to the measurement hub, thus eliminating the need to install any wiring in the structure to be monitored. Because of its modular design, this system is adapted to structures of all sizes, from a small overpass to a long tunnel and can be installed in both new and existing structures.

Features of SensCore Wireless Corrosion Monitoring System

  • Corrosion Initiation and Progression
  • Concrete Corrosion Measrement
  • Concrete Humidity and Temperature Sensor 
  • Measurements at several depths in the concrete cover
  • Can be installed in new or existing structures
  • Pipeline internal corrosion monitoring
  • Wireless data transmission within the strucutres and to the internet

The SensCore system integrates seamlessly with other sensing technologies, based on electrical, vibrating wire or fibre optics. It is therefore possible to combine several technologies in order to implement an optimal monitoring network for a specific structure. The system is composed of four main elements:

  • The sensors, measuring corrosion current, resistivity and temperature
    • Corrosion Current Sensor to measure corrosion initiation and corrosion rate.
    • Concrete Humidity Sensor to measure electrical resistance and temperature.
    • Combined Humidity and Corrosion Sensor for existing structures to measure corrosion initiation and rate, humidity content and temperature.
  • Dataloggers to record the date and transmit it wirelessly
  • Central Unit, receiving and concentrating the data from the dataloggers and transmitting or storing it for further analysis.
  • Software for data management and publishing, including web interface