Control and evaluation of corrosion in reinforced concrete
Control and evaluation of corrosion in reinforced concrete
Surveillance with embedded sensors
Real time data
Corrochip, the most efficient solution for long-term monitoring of corrosion in reinforced concrete structures.
CORROCHIP is an innovative system for the detection and evaluation of corrosion processes in the steel embedded in concrete that allows detecting it when it starts corrupting, remotely monitoring the state of the structure over time and obtaining information on the progression of corrosion with high reliability.
It is an integral solution that uses sensors embedded in the structure to evaluate the condition of the reinforcements, sends and processes the data in the cloud and provides various physical-chemical parameters, also making an estimation of the corrosion rate using an innovative technique, precise and in real time.
The great enemy of concrete structures
Corrosion is one of the most worrying processes related to the deterioration of the reinforcements embedded in concrete structures, and the one with the greatest economic impact. As it is a process that develops internally, when it’s visible on the surface, the damage is usually very advanced.
Accurate measurement of corrosion in reinforced concrete is essential to analyze the durability and service life of the structure. Detecting corrosion in time and acting proactively lengthens the life of the structure, significantly reduces maintenance costs and guarantees safety.
CORROSION CONTROL WITH CORROCHIP
Key tool for assessing safety
CORROCHIP allows the state of structures to be known at all times, without the need to carry out on-site interventions, and offers the necessary information to evaluate the progress of corrosion in order to anticipate deterioration situations that could compromise their integrity. This allows us to act in time guaranteeing structural safety.
Long-term continuous monitoring
CORROCHIP is integrated into the structure and acts as a sentinel system, making and sending measurements periodically during the life of the structure. The durability of the corrosion sensing element –which has a life time of at least 100 years in any type of structure– and the use of the non-destructive technique PSV-TE allow the control of corrosion in the very long term.
It can be integrated into new and existing structures
The CORROCHIP sensors are embedded in the concrete after identifying the critical areas for the measurements. In new construction this procedure is carried out before pouring the concrete, while in pre-existing structures it is also possible to integrate the system through minimal intervention.
Connected structures: greater cost efficiency
The remote monitoring and reliability of CORROCHIP’s exclusive PSV-TE technique greatly optimize the management of structures and achieve significant reductions in inspection and maintenance costs by providing the critical parameters necessary to evaluate a structure from the point of view durability, in real time.
An innovative technique
CORROCHIP is a novel multiparameter system that uses embedded sensors to detect corrosion in reinforced concrete structures. Based on the physicochemical measurements made by the sensors over time and using the innovate PSV-TE stepped pulse scanning technique, CORROCHIP allows estimating the corrosion rate from the initiation period to the propagation period, based on measurements obtained in real time and with a high level of precision.
This technique, developed by a multidisciplinary team of researchers from the Universitat Politècnica de València, is protected by a patent. It uses a method based on the Tafel extrapolation method (TE) for the detection of corrosion and by using potentiostatic pulses it eliminates its main drawbacks, such as polarization. irreversible of embedded reinforcements. The new PSV-TE technique is therefore a non-destructive method that allows constant monitoring over time and is very accurate compared to other laboratory or field techniques.
Developed by Witeklab and the Universitat Politècnica de València – Institut Universitari d’Investigació de Reconeixement Molecular i Desenvolupament Tecnològic (IDM) – Departament de Construccions Arquitectòniques
THE CORROCHIP SYSTEM
Automatic measurement with cloud data
CORROCHIP consists of the following elements:
Measurement sensor, which is embedded in the armor and consists of:
- Data acquisition and pre-processing board
- One or more working electrodes (WE)
- A counter measuring electrode (CE)
- A reference electrode (RE)
Internal station, which collects the measurements made by the sensors.
External station with autonomous photovoltaic power, connected to the CORROCHIP server in the cloud via a 3G / 4G / 5G data radio link.
The CORROCHIP software allows the visualization of the physical parameters measured and incorporates an alarm system for different levels of corrosion in the structure.
CORROCHIP includes a system for displaying measured physical parameters such as:
- Intensity of corrosion icorr (uA/cm2).
- corrosion potential Ecorr (mV) vs SCE.
- Corrosion rate vcorr (μm/yr).
- Estimated critical time tc (years)
Other measured parameters that are of interest are:
Electrical resistance of concrete
- Electrical double layer capacity Cdl (μF/cm2)
A 360º SERVICE
Our specialized team will carry out a study of the structure to define the most representative points for corrosion monitoring and recommend the optimal positioning and number of sensors.
Measurement system installation
The first part of the installation of the CORROCHIP measurement system consists of the integration of the electrodes and the wiring to the measurement electronics and hermetic sealing. Next, the final installation of the power station and connection to the data network is carried out for the transmission of the measurements to the CORROCHIP server.
Reports and consulting
The Witeklab technical team is in charge of monitoring the parameters and programmed alarms and prepares the periodic reports established with the Client. It also offers advice on the interpretation of the reports and the adoption of remedial and/or reinforcement measures.
Projects using Corrochip for corrosion control
Leading companies in the fields of construction, structure design and materials production use the CORROCHIP system to detect and monitor corrosion processes in critical infrastructures, as well as to test the relationship between concrete quality and the appearance of corrosion in structures located in marine environments.
If you want more information or a demonstration of the CORROCHIP system, do not hesitate to contact us using the attached form.