PC Products 71120 PC-Masonry Two-Part Masonry Repair Epoxy Adhesive Paste, 128 oz in Two Pails, Gray

4/3/2018 update: still holding up strong after a few years and harsh winters. Took another pic on a rainy day, that's why the concrete looks darker. A bit pricey but this stuff holds a strong bond to my existing concrete like nothing I have ever used before. This stuff seems to stick like a Quad brand caulk, but this stuff dries hard within hours. Too be so gooey, could not believe this epoxy dried strong and hard like concrete. Dries light gray, I threw in some sand to tone it down. This stuff doesn't even shrink or sag. Harder to work with than hydraulic concrete, but this stuff seems to be more of a superior product. Repaired some hair line cracks and broken driveway and foundation, glad I was able to sand down high points.. I can't wait to see this next year, the way this stuff bonded I would almost think this will last for years. Clean up is a bit messy like adhesive or oil base products , but this has to be my favorite concrete product so far. This stuff doesn't appear to have any visible cracks, I would almost think I will be crack free for a long time to come....only time will tell. I have only worked with epoxy products 2 other times and they have lasted years and counting, so no reason to think why this wouldn't last for years.

Excellent bonding, easy to use, sturdy repairs.

This did the job, but I also purchased the PC products epoxy in the 9 ounce tubes that are used in a caulking gun, and I preferred that one more. The tube of epoxy made it much easier to inject the epoxy into the cracks using the caulk gun. The epoxy from these buckets was very thick and a little tough to work with and hard to mix by hand. This also made it difficult to force it down into any deep cracks. Also, the finished product from the tubes was much smoother and better looking than the mix from the buckets which had a rougher texture. Both products dried very hard, but if I did it again I would use all tubes of epoxy with my caulk gun instead of trying to mix this epoxy by hand.

I used it to repair large cement planter boxes. It can be sanded. However, you’ll need to use a powerful orbital sander. It’ll never sand by hand. I used a Festool Rotex because of power. Plus this stuff kicks up LOTS of dust so my vac attachment worked perfectly. I don’t recommend sanding without a vac.

Expensive but was able to stretch it by adding pea gravel (Home Depot) to the epoxy. I was able to smooth out the surface with a trowel. I was able to polish down any rough spots with a belt sander. Used this to patch holes and uneven surfaces in my airplane hangar asphalt floor. Absolutely no chipping or cracking after driving vehicles and a 5500 lb. airplane over it many times.