Liquid Nails Tough Repair 10.3 oz Gray Interior and Exterior Concrete and Mortar Repair Adhesive

Works great I used it to patch up a few small cracks on my concrete pad that holds my shed. Price was below some other options also,but seemed to work just fine,or as good as the expensive options . At least it did for my small fix it project. You may need to consult a professional for advise if you're unsure for your project. IMO it's great for filling in cracks or maybe fixing grout lines.

Used this to fill in deep gaps around patio tiles that I had to reattach. I only used it to fill in cracks, gaps between tiles etc and not to actually use as an adhesive. Nice gray color similar to the gray grout I put on top after letting it dry for 24 hours. Used my finger to smooth it out in gaps and didn't make it too deep. Let it dry and go back a day later to fill some more but don't put on too much or it won't dry correctly.