Invent recycled building material from concrete, plaster, paint, wallpaper, and stone.

What happens if you crush these materials together? Can DIN stones be produced from them?

I am looking for a way to recycle a house. The roof structure is excluded. Flat roof.

I assume that less than 0.1% of the registered participants have studied materials science and engineering. I belong to those very 99.9%. But my gut feeling tells me that a material made of x different substances (and thus with x different properties regarding temperature behavior / moisture / flammability / stability / pollutant content....) cannot be a good building material.

What happens if you crush these materials together? Can you produce DIN stones from them?

Whatever you mean by "DIN stones" - no one will develop a process to crush the tiny amount of "rubble from a single house" and turn it into a stone material. After World War II, this was done on a large scale, but back then people also drove cars with wood gasifiers. What is your intention: to save disposal costs for your specific rubble, or to win first place at "Jugend forscht"?

I think of
- fire protection
- stability
- pollutants
- processing machines

My intention is nature conservation. Our civilization only processes raw materials that have already been processed before.

My intention is nature conservation. Our civilization only uses raw materials that have already been used before.

Then every single raw material should be recycled individually and not just mix the waste. That’s how it’s done today – and what cannot be recycled simply remains waste in the end.