How to Fix Cracks in Concrete: 4 Best Methods - Handyman's ...
These include using simple concrete glue, filling the crack with more concrete, using expanding foam, and even starting from scratch. Best for Very Small Hairline Cracks: Concrete Glue. For very small cracks that are not too serious, you can try using something simple like concrete glue or cement glue – some form of a concrete crack filler ...