alt Hacker NewsSand used to make concrete is a finite ressource, and extremely polluting to extract. Why wouldn't we save it and build lasting buildings?
Sand used to make concrete is a finite ressource, and extremely polluting to extract. Why wouldn't we save it and build lasting buildings?
It is not.
You can make sand by crushing rock, we don't because it is cheaper to extract natural sand. Should we run out of suitable natural sand, we will just have to go with the more expensive option, not a big deal.