How to fix cracks in concrete.
Repairing large cracks in concrete patio.
How to repair wide concrete cracks.
Now you can move onto the actual methods of fixing a crack in the concrete.
These include using simple concrete glue filling the crack with more concrete using expanding foam and even starting from scratch.
The secret to fixing wide concrete cracks is to undercut the sides of the crack to give it an inverted v shape.
Instead for cracks up to 1 2 inch wide and 1 4 inch deep you should use a polymer based sanded acrylic latex filler that you inject into the crack with a caulking gun and smooth over with a putty knife.
Concrete cracks cannot be patched with concrete since concrete contains aggregate rock pieces that are too large to fit in cracks.
There are four main methods at your disposal which you can use to fix cracks in concrete.