5 ms·

If that's the case, why aren't we using artificial sand for concrete? Wouldn't that make more sense?

• abduhl 7y ago
  What is “artificial” sand? Sand is just a classification of grain size of soil. We make sand all the time at quarries by crushing rocks. Most of the aggregate used in construction is made this way or taken from a pit/dredged.
  • lmm 7y ago
    If we can make construction sand by crushing rocks, why is so much being taken from this river?
    • abduhl 7y ago
      Because crushing rocks costs more money than dredging rivers. Especially when there are weak or no environmental protection laws or regulations for dredging, like on the Mekong.