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Inspired by Velcro, ReCon Project Allows Separation and Reuse of Building Components, Reducing Waste, Renovation Costs, and CO₂ Emissions.
Researchers from Graz University of Technology (TU Graz), in Austria, have presented an innovation that could transform the construction sector. This is the ReCon project, developed in partnership with companies such as Axtesys and NET-Automation.
The goal is simple but ambitious: to create modular Velcro-like connections to enable the easy separation and reuse of parts of buildings.
This approach aims to reduce the enormous waste of materials caused by traditional demolitions.
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Instead of destroying and discarding components, the system allows for the quick and clean decoupling of structural or interior pieces.
How the Technology Works
The system uses mushroom-shaped hooks or elements manufactured through 3D printing. They are applied to concrete, wood, or even paper derivatives.
This connection ensures firmness comparable to conventional solutions, but with one essential difference: it can be disassembled without losing integrity.
According to the researchers, this allows for the separation of long-term structures, such as load-bearing walls, from more temporary parts, like internal partitions or electrical installations. Thus, renovations stop generating large amounts of waste.
Additionally, the model draws directly from Velcro, facilitating both assembly and disassembly. It’s like a fitting that maintains firmness while offering reversibility.
Applications in Interiors
In the first phase, TU Graz focuses testing on indoor environments. Partitions, raised floors, technical panels, and other surfaces can be installed like LEGO pieces.
This flexibility reduces costs, accelerates renovations, and also extends the lifespan of each component.
There are also studies to replace 3D printing with injection molding or metal stamping.
This would increase the durability of the connections and open up space for more demanding applications, such as removable facades or even reconfigurable street furniture.
Circular Economy Applied to Construction
The project follows the concept of a circular economy, prioritizing reuse, repair, and prolonging the lifecycle of products.
In the construction sector, this represents a profound change, as the traditional model is still linear and based on disposal.
With modularity, the same wall panel can be removed from one building and used in another. This logic practically does not exist in the current industry, where the most common destination is waste.
Therefore, the ReCon system can become a game-changer for a sector that accounts for about 35% of all waste generated in Europe.
Digitalization and Traceability
Another highlight of the project is the integration of RFID chips and QR codes in the components. Each piece can carry information like manufacturing date, composition, origin, and possible contaminants.
This digital data offers complete traceability, something rare in construction. As a result, technicians and engineers can know exactly what they are reusing or recycling, even decades after installation.
This differentiator also meets new European regulations. The EU Green Taxonomy and the revision of the Construction Products Regulation (CPR) require more transparency, less waste, and greater encouragement for reuse.
Environmental and Economic Impacts
The adoption of the ReCon system can bring direct effects on the reduction of CO₂ emissions.
As components gain more than one useful life, there is less need for new raw material production. Additionally, transportation and waste disposal also decrease.
In practice, this represents financial and environmental savings. Renovations can become faster, less costly, and more sustainable. Entire buildings can be adapted to new functions without heavy or expensive demolitions.
This reversibility also promotes a new culture in the sector. Instead of demolishing, the focus shifts to adapting and maintaining. This opens the door for more flexible and resilient cities, capable of responding to social and environmental changes with more agility.
Recognition and Future
The hook-and-loop system has already won the 2024 Sustainability Award in Austria, a clear sign of its potential. It is currently in the demonstration phase at the Vienna Museum of Science and Technology, where it will be on display until 2026.
Researchers believe that if the system is standardized and applied on a large scale, it could become fundamental for building cities aligned with long-term climate goals.
The ReCon project emerges as a direct response to an old problem: the excess waste from construction.
By adopting modular and traceable connections, the sector can save resources, reduce environmental impacts, and prepare buildings for the future.
Still under development, the proposal already demonstrates technical and regulatory feasibility.
If it advances beyond prototypes, the Velcro-like system could mark the beginning of a new era in how we build, renovate, and maintain urban spaces.
With information from TU Graz.
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