Does crack and mortar joint patching crack or peel?
All concrete moves. Mortar joints and saw cuts are engineered to allow for the movement of concrete. Cracks are the cause of more movement than the mortar joints\saw cuts will allow for. Due to this cracks\mortar joints\saw cuts can be patched but there is no guarantee that they will not move in the future, therefore causing a crack in the epoxy patch. Generally this will simply be a small crack that will not chip or peel from the concrete.