Expansive Demolition Grout 11 Lb. Bucket for Rock Breaking, Concrete Cutting, Excavating. Alternative to Demolition Jack Hammer Breaker, Jackhammer, Concrete Saw, Rock Drill (Type 1, 77-104° F)

I love using this stuff. Make some holes, mix with water, pour, and wait. No jack hammering, sledging, or hidden dangers. In tight quarters (crawlspaces) or remote places this is ideal to break up concrete. This picture is not with recommended hole spacing but it still did it's job without heavy equipment getting near the sliding doors or annoying the neighbors with loud noises.

This stuff works great. Been using it to clear rocks off the trail around a cabin. I have removed dozens of boulders, many that I thought would be to big for this stuff to work. The larger ones may take a few days to break, but they do break. I have even used it under the front porch storage are. Very safe,

The product worked beyond my expectations, follow instructions!!After 8 hours i had some decent cracks forming, after 4 more hours the cracking doubled in size !!

The biggest drill I have is 7/8 inch that came with my Chinese hammer drill. So I drilled four holes, 9 inches deep. After about 24 hours a crack appeared and reached a width of about 1/4 inch. I had a mini excavator to use to separate the rock and it came apart. Without the machine a steel wedge might have worked. After I removed the first part of the rock, I drilled four more holes and cracked it again and now what is left is below ground level.Calculating the amount to use resulted in a lot of waste. My four holes only needed about two pounds of material. I calculated .29 oz of H2O per ounce of grout. So 9.25 oz H2O for one pound grout.The stuff is made in China and In my opinion is over priced compared to the cost of material used to make this stuff but it got the job done so it was worth the cost to me.

After 24 hours I didn't see much. I returned at 48 hours and all the rocks I drilled and filled with dexpan were split. One was shattered, so keep in mind, there may be a possibility of flying fragments.

Make sure you mix correctly, get it to the bottom of the holes, and mix it in the bottom of the hole with any cement dust left over.

This stuff is amazing for thick concrete. It will save you from the jackhammer and save you a lot of time in general

This product did not work for me. I did everything right. I made sure to measure the right amount of each and uh, nothing happened. The stuff dried and turned to power but no cracks 3 days now