We have been offering for several years now a concrete planing service.
This is most useful to the dairy farmer who’s cows self feed silage in the silage clamp.

Concrete that has been made with a hard aggregate such as granite or gravel will leave the aggregate exposed as the silage effluent eats into the surface.
This is damaging to cows feet, and results in lameness. The answer!
Concrete planing.                                                                  Picture