You can't level dried concrete. Once concrete has dried, it is solid and cannot be reshaped.
Here are some options for addressing uneven concrete:
- Grind it down: Use a concrete grinder to remove high spots and create a more even surface.
- Apply a leveling compound: For minor imperfections, you can use a self-leveling compound to fill in low spots.
- Install a new layer of concrete: If the unevenness is significant, you may need to remove the existing concrete and pour a new layer.
It's important to note that these solutions may not be suitable for all situations. The best approach will depend on the severity of the unevenness, the size of the area, and your budget.
