Case Study: Non-intrusive Concrete Fastener with 3D-Printed PA11 Deformation Layer
Maintenance and operations in nuclear power plants often require fastenings on concrete walls for installing sensors, cable trays, pipe and lifting equipment support electrical equipment and air-conditioning systems. In this case study, we will examine a non-intrusive bonded fastener commercialized under the brand name C-BLOCK™ which has a 3D-printed deformation layer with PA11 material.
Non-intrusive Bonded Fastener Introduction
In this case study, we will examine a non-intrusive bonded fastener commercialized under the brandname C-BLOCK™. This revolutionary fastener is designed by Cold Pad – a French bonding and fastening solution provider. C-BLOCK™ is specifically designed for use in nuclear power plants because instead of drilling into the concrete wall it bonds to the wall. C-BLOCK™ is easy and safe to install and remove thanks to its non-invasive feature. This fastener is also able to sustain seismic
loading conditions to an intermediate deformation layer 3D-printed with Polyamide 11. The deformation layer is a component that seats between the substrate (wall, floor, ceiling) and the fastener.
Key challenges
When developing the intermediate deformation layer, Cold Pad engineers aimed to address the following material challenges:
- Fastened assembly's durability;
- Anti-seismic properties;
- Removability.
