Answer by Rakshita Nagayach:
Cement once set, cannot be brought back to it’s original state and thus its original cannot be served then. Even if it is finely crushed, the bond formation between aggregate and sand does not occur as the chemical reactions have already taken place during the initial setting.
Cement cannot be recycled, but it can be used for the following purposes in the form of concrete debris:
- To fill landfills
- Using it as a replacement of gravel
- As base material for roadways.
Thanks for the A2A!