solidian eGRID flexible grid with electro-conductive coatings
Specially developed flexible grids in combination with electro-conductive coatings provide high tensile strength and outstanding electro conductive properties
solidian eGRID is now also available with different conductive surface treatments for special applications in which electrical conductivity is important.
advantages & characteristics
What is the problem?
While raw carbon fibers themselves have very good electrical conductivity textile reinforcements are usually impregnated with a polymer that insulates the grid. Depending on the product and the impregnation polymer the surface of the carbon fibers is more or less covered and can not be electrically connected.
The new technology allows us to generate a fully conductive surface of the reinforcement and to connect all carbon filaments to one conductive unit.
In various applications, a combination of constructive reinforcement and electrical conductivity can be interesting.
For example, conductive carbon reinforcements can be used to heat concrete surfaces, which can be interesting when de-icing runways or loading ramps.
With conductive carbon concrete reinforcement, reinforced concrete can also be protected against further corrosion. Conventional cathodic corrosion protection systems (PPS)use titanium meshes or strips, which are very expensive. Flexible reinforcing grilles made of conductive carbon fibers can in some cases replace titanium meshes.
To monitor ingress of moisture in reinforced concrete structures, two layers of conductive carbon reinforcement can be arranged in the concrete cover or in an additional carbon concrete layer. The electrolyte resistance of the concrete can be measured in between using the carbon reinforcements and thus an increase in moisture can be indicated.
The two functions mentioned above have been extensively investigated in recent years as part of the SMARTDECK research project with the participation of solidian. The project combined the three functions of strengthening, monitoring and preventive cathodic corrosion protection (PKKS). For this purpose, solidian has made high-bearing reinforcement grids sufficiently conductive in its own development work and pre-assembled the required two layers of reinforcement with spacers. The concept was successfully tested in summer 2019 on a bridge building near Mönchengladbach.
- Researchgate.net: SMART‐DECK: Multifunctional carbon‐reinforced concrete interlayer for bridges
- bast – Federal Highway Administration (Germany): SMART-DECK – ein multifunktionales, intelligentes Verstärkungs- und Schutzsystem