Hello: my garage floor is concrete slab and the slab has a "lip" that extends out about 2 feet beyond the garage door where it meets the blacktop driveway. The lip section has long cracks and portions of the cracks have loosen - - if I remove the pieces, they leave a V shape cut-out at the cracks.
Is there a repair/patching process for the cracks, like a giant version of repairing cracked dry wall using quikcrete or another material ?

I've seen an epoxy kit for repairing cracked basement walls but the cracks are covered with a material, then epoxy is injected through holes every 12" but the cover material leaves a "scar" on the wall.
Thank you.