Designing brick buildings to be disassembled, not destroyed
Researchers at Austria’s Graz University of Technology are working on a building system that treats brick construction less like permanent demolition-bound mass and more like a reusable kit of parts. Their concept uses prefabricated brick wall elements connected through reversible joints, allowing structures to be dismantled and rebuilt instead of crushed into waste at the end of a building’s service life.
The idea addresses a major materials problem. According to the source text, construction and demolition waste accounts for more than one third of all waste generated in Europe. Traditional brick construction contributes to that burden because conventional mortar makes reuse extremely difficult.
A circular alternative to one-way construction
The TU Graz team’s proposal is conceptually simple: if buildings can be taken apart, their main components can be used again. The comparison offered in the source is to a Lego model that can be disassembled and rebuilt elsewhere with the same parts.
To make that possible, the researchers replaced permanent bonding with reversible joints. The current public description does not disclose many technical details of the joint design, and the source explicitly notes that information remains limited. Even so, the broader system architecture is clear enough to show why the project matters.
The wall elements are prefabricated, 44 centimeters thick, and include insulating wool to improve thermal performance. They are also pre-plastered at the factory, a detail that could reduce work required on site.
Why embodied carbon is the real target
The innovation here is not only about waste reduction. It is also about embodied emissions. Manufacturing new bricks and materials, transporting them, and demolishing existing structures all carry a carbon cost. If major wall elements can survive multiple building cycles, those emissions can be spread across repeated use rather than paid again from scratch.
Project manager Hans Hafellner of TU Graz’s Institute of Building Physics, Services and Construction said the results so far indicate that reuse through the new jointing solution can avoid a significant share of total emissions during a second phase of use. Looking across three life cycles, the team says CO2 emissions could be reduced by around 60% compared with conventional construction methods.
That figure is substantial because it points beyond marginal efficiency gains. It suggests that redesigning assembly methods could change the whole environmental profile of masonry construction.
The practical challenge ahead
The promise is strong, but several questions remain. The source notes that detailed technical information about the reversible joints has not yet been disclosed publicly. That means key issues such as structural durability, weather resistance, code compliance, and labor demands still need fuller explanation before the approach can be judged as market-ready.
Even so, the concept aligns with a broader shift in construction thinking: materials should be selected not only for how they perform during a building’s use, but for what happens when that use ends. In that sense, the TU Graz work is part of a growing push toward circular building systems.
If the approach scales, the effect could extend beyond emissions accounting. A building stock designed for recovery and reuse would also reshape demolition practice, materials logistics, and the economics of renovation and relocation.
- TU Graz developed prefabricated brick wall elements joined by reversible connections
- The system is meant to allow dismantling and full reuse rather than demolition waste
- The wall elements are 44 centimeters thick and include insulating wool
- The team says CO2 emissions could fall by about 60% across three life cycles
This article is based on reporting by New Atlas. Read the original article.
Originally published on newatlas.com
