The adaptation of a more circular approach in architecture is a challenge because concerns about the structural integrity of certain building materials. In particular, the use of biodegradable materials for small, large architecture is not easy. However, a team of designers from the Living Design Lab of the Seoul National University found great use of thrown egg shells for such a purpose, with the aptly named RE: Shell product.
Construction waste lands mainly on landfill and it is a crisis relevant in South Korea, which is relevant in rapid urbanization and demolition. The country's waste management problem corresponds to 45% of its total waste to building materials.
The team presents Re: Shell as a sustainable option to curb this growing problem. They chose egg shells for their abundance and lightness of the collection of local bakeries and restaurants. In addition, its main component, calcium carbonate, is an important part of the cement that offers strong binding and hardening qualities.
In this case, the egg shells undergo a series of procedures to ensure structural integrity. They are washed, dried and then grounded into fine powder, mixing with natural additives to improve their properties. This includes red tone for improved durability, wheat bran for a smooth texture and straw for greater flexibility and lighter weight.
Re: Shell showed an extraordinary hardness in strength tests and visible signs of natural decomposition when they were buried in the ground. This means that you return to earth at the end of his lifespan. The team successfully created a composed zero waste network, which is formed into a number of interlocking bricks such as Lego blocks. The prototypes created for the material Korean traditions such as the portable SOBAN tables and room divider. The versatility of its purpose also extends to household items, decorative objects or even pieces of furniture.
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Images with the kind permission of Living Design Lab