Is there a reasonably price garage floor coating that will fill in small pitts and cracks?

im looking to seal my garage floor mostly to prevent further salt damage. it has small pitts in the surface and very small cracks here and there. i know most of the kits u can buy at the local diy centers (menards, home depot, and lowes) are glorified paints and wont do the job. does anyone know of a thicker epoxy or some sort of resin that will not only coat the floor but fill in the little pitts and cracks to smooth out the surface? thanks