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Continue to ChatETH Zurich makes lightweight concrete ceiling using 3D sand-printing https://thefutureisprettyrad.com/2019/04/22/eth-zurich-makes-lightweight-concrete-ceiling-using-3d-sand-printing/
ETH Zurich makes lightweight concrete ceiling using 3D sand-printing https://thefutureisprettyrad.com/2019/04/22/eth-zurich-makes-lightweight-concrete-ceiling-using-3d-sand-printing/