The construction of residential buildings from peat slabs has been known in Northern Europe since time immemorial, but today Estonian scientists propose to revise the idea using 3D printing concepts. Peat is cheap, available in abundance, but to create solidifying solutions is not suitable, as proved in many experiments. And so the solution of the problem seems to have been found.
For small Estonia, this can have revolutionary consequences. Approximately 22% of the country's territory is occupied by peatlands, a colossal source of raw materials. At the same time, the region has developed oil shale mining, about 7 million tons per year, but there is no mechanism for processing waste. The main by-product, ash, is just garbage, and is dangerous for the environment. But with the presentation of scientists from the University of Tartu, ash and peat can become a revolutionary material for the construction of housing.
Just the high pH level of the shale ash and compensates for the chemical properties of the peat that previously prevented the binding of the binders in the mixture for 3D printing. The composition also includes cement and silica nanoparticles, and the output produces a material similar to concrete. For complete freezing it takes more than a day, so the technology of printing buildings will have to adapt to new conditions. However, from the very first minutes the mixture seizes and if the blocks are formed from it, not the layers, they will retain sufficient elasticity to be alloyed in their own weight into a single structure without cracks.
The authors of the development point out that their material is durable, light, durable, not combustible, despite the presence of peat in the base. It blocks the transfer of heat and sound, but the main thing is that it is very cheap, because it is mostly made of garbage. That promises prospects for cheaper construction and parallel cleaning of the environment in the future.js.src = “&version=v2.8”; 'script', 'facebook-jssdk'));