Crushed concrete vs limestone for driveway | Heavy ...
Oct 24, 2011· We have used crushed concrete for a long time in MI. It is a good product, and used the right applications it works well. A while ago MDOT stopped allowing crushed brick mixed in with the crushed concrete. Since a lot brick is clay, it does not help on the freezing end of things. Limestone is a good product, if you have deep pockets.