PC ProductsPC-Concrete Epoxy Adhesive Paste for Anchoring and Crack Repair, Two-Part 102oz in Two Pails, Gray 71021

I ordered to fill cement cracks and low spots in garage. Must mix thoroughly and be prepared to use immediately as it sets within 10 min. So far so good. There was two of us working-one pouring one spreading.

used to rework a storm shelter installation, that the installers 2 part epoxy never adhered to the concrete floor in the garage, or to the bottom of the shelter. Roughed up both surfaces with diamond blades in a multi tool. The epoxy is quite sticky when mixed, had decent working time. I taped off the floor & storm shelter, mixed batches equaling approx 1/8th of container. Then troweled in off a piece of sheet metal I mixed it on, making sure to swirl it on both surfaces prior to gap filling. My application a bit different than normal uses, as the storm shelter was in place & weighs approx. 4,000 lbs, with some gaps 1/4-3/8 of an inch, due to garage floor irregularities. All said it seemed to bond to both surfaces, easy to trowel in using a margin trowel, , and has cured very hard with in the 24 hrs stated . As far as strength/adhesion? Won't know unless it gets Tornado tested. I do believe it definitely enhanced the strength of the anchor bolts in to the concrete. Got way more product at way less expense than purchasing in caulk tube form... the 2 tubs did interior & exterior perimeter of a 4x6 ft shelter

This 2 part epoxy is ideal for fixing small cracks and foundation spalling on your concrete foundation.Precisely mixing the 2 parts together is challenging since it is a 1 to 1 mix it must be fairly precise when mixing it. I used a couple plastic spoons to keep them separate. One spoon is used for the epoxy base and the other was used the epoxy hardener. You must do this mixing process with extremely good air circulation. The hardener fumes are toxic so you will need to open the epoxy hardener container and stir it due to settling then put equal amounts of base and hardener in a small clean container and then quickly close and seal the lid on the hardener container. You can buy this same PC Concrete product in a caulking tube size that pre-mixes it and then dispenses it, but it would cost considerably more compared to these bulk containers. Once it is mixed you have about 15 minutes to apply it to your foundation. repair.

I used two of the largest container sets of this to seal a cinder block wall in my basement. There had been some minor water seepage and I did enough research to consider this a good option. Add in that I'd used it to anchor a bolt previously with no issues and I was basically a converted user. So I ordered three more sets and put one on last week. However, less than an hour before I started writing this, I tried to use the fourth set and noticed it was acting strangely. It was previously easy to apply, but now it was gelling strangely even though I had done nothing differently--that's when I started to notice the heat on my gloves. I was wearing thick gloves to avoid getting this on my skin and the heat coming through the gloves was enough to make me think melting was a real possibility. I yanked them off and submerged the whole mess because I honestly think there's a real chance of it melting through the container it was mixed in. So now, I'm sitting here having read the manual and finding no indications that this was even a possibility. I'm left wondering what the h*** I just put on my wall as they clearly screwed something up badly in this batch and I'll be sitting here until the heat disapates with a fire extinguisher.Update; With my annoyance having worn off, I wanted to review my review. Nothing I said it out of line. When this stuff works, I have no real issues with it and will likely use it again. When it doesn't, you're risking burns and it doesn't even mention that this is a possibility in the documentation. If nothing else, the "flash fry" is almost guaranteed to cure the whole mess so quickly that you can't use it and end up wasting the majority. (I gave them back a star because I'm assuming my situation was a unique event and the other 3 1/3rd pails I've used have had no issues.)

To start I rarely ever write reviews. Probably did three in my life. This product worked so well I had to for this one. Approximately 12 years ago we developed a foundation crack in my poured basement wall. Over the past 12 years the wall would leak very little only with large amounts of rainfall. I have tried everything from hydrolic cement to wonder products like Flex Seal. Nothing worked. There is no way to access the crack from outside due to an inground pool and concrete walkway. I looked at other options with products you inject into the crack. Only problem is the lower portion, where most water comes in, is a hairline. I called two contractors to look and cheapest price was $1,000.00. I was told only way was to grind and chisel crack wider then use some super duper epoxy. My son asked his HS shop teacher for ideas. This product was his suggestion. First thing i did was take a diamond blad grinder and cleaned the area well. I also ground a small “U” shaped channel along the crack. The problem i was running into was active water seaping in. I fixed this with a propane tourch. Put flame into the crack and heated it enough to stop the water fot atleast 10-20 minutes. After knowing this would stop the flow the last step was to acid wash the area. This removed all the chalky residue from the area. One more hit with the torch and inmixed the two compounds. It was a bit thinner than I expected but still went on with little issue. That was two days ago. It has rained twice since putting it in and no leaks. Solid as rock. I included three pictures with this review. The first youu can see the brown on the wall. Thats mud that was seeping in the second was after i ground the crack down and put score marks to help the epoxy grip the wall. Last one is finished product. I am extremely pleased with this product and it worked better than expected.