Decades ago, my dad had me repair a nasty groove in a driveway, the repair lasted for many years (15+). I have no idea what I used, IMHO, I would ask at ACE hardware if they know of a product that will work. I would also ask the vendors you are considering to, see if they have any recommendations. I would also carefully use a hammer and chisel to make sure the surrounding concrete is solid.
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Pennsylvania, for 60+ years, most recently, Allentown, now TV. 
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