In space you can build the structure of a space ship out of concrete if you have a means of fusing the material without water. You could print enormous spacecraft in micro gravity.
One of the ideas I’ve seen for mars is printing habitation structures with martian concrete using the abundant sulfur to bond it together. (Sulfur has a low melting point.)
One of the ideas I’ve seen for mars is printing habitation structures with martian concrete using the abundant sulfur to bond it together. (Sulfur has a low melting point.)
What about the delightful “rotten egg” aroma?