I have 30 years of experience listening to the sorrowful lamentations from homeowners just like you that hired a contractor ...
Use a knife or trowel to scrape off excess epoxy or filler, and make the solution level with the surface concrete. Large cracks require concrete patching compound, which you must stir or mix with ...
By experimenting with cement in similar shapes and using polyvinyl siloxane as the soft layer, the team achieved a material that's "17 times more crack-resistant than standard cement and 19 times ...
Use concrete epoxy with fiberglass tape ... I can see most of those methods failing and the crack reopening. After our text conversation started to get a little contentious, I decided to step ...