Keeping the house warm with tiny mass ovens from unfired clay bricks

Pilot product: Tiny mass oven by compressed earth blocks
Location: Rønde
Technology: Unfired clay bricks
Ash type: Sewage sludge ashes (SSA)
Ash replacement level: 5%

This pilot demonstrates that sewage sludge ash (SSA) can be used in the production of compressed earth blocks. SSA colours the bricks into reddish colours – the sustainability is simply visible! ​

DTU determined the optimal SSA content in unfired bricks at the laboratory scale. Sustainable living produced the compressed earth blocks and constructed the tiny mass oven in a residential house.

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