Cracking / chipping at control joints

[Beercan321]

My garage has a 30x30 slab that was poured about 6 weeks ago. The contractor cut 1/8 inch control joints in the slab in the pattern of a tick-tack-toe board. In the four areas where the joints intersect the concrete is starting to crack and chip apart. Granted the cracks / chips are small but I’m not happy about it since it’s a new slab. What would be the best way to prevent this from getting worse? Should I mix a small amount of concrete and fill in the joints for a few inches where they intersect? Would it be better to use some sort of caulking? Any suggestions would be greatly appreciated.

Thanks!

 

[LegacyIndustrial]

Beercan, will you coat with epoxy or leave natural?
The concrete solution you proposed will not work and will create more headaches.

If you will coat with epoxy, use a gel epoxy crack filler.
If you will leave natural use a urethane caulk/sealant.