There are four main methods at your disposal which you can use to fix cracks in concrete.
Repairing large cracks in concrete patio.
Now you can move onto the actual methods of fixing a crack in the concrete.
How to repair wide concrete cracks.
This helps the repair material to key into the crack creating a mechanical bond in addition to the chemical bond between the patch material and the concrete.
How to fix cracks in concrete.
Installations of concrete can last hundreds of years but sooner or later most end up developing small cracks gaps holes and crevices.
Concrete cracks cannot be patched with concrete since concrete contains aggregate rock pieces that are too large to fit in cracks.
The secret to fixing wide concrete cracks is to undercut the sides of the crack to give it an inverted v shape.