DexpanExpansive Demolition Grout 44 Lb. Bucket for Rock Breaking, Concrete Cutting, Excavating. Alternative to Demolition Jack Hammer Breaker, Jackhammer, Concrete Saw, Rock Drill (DEXPAN44BKT2) (50F

Had our doubts at first. This product works as advertised. Follow directions and no problems.

Works well on limestone. Give it 2 to 3 days for best results

Dexpan used in natural solid Granite Slab to make a ramp ( 10' wide x 6' long and about 45 degree slope). Drilled holes from 24"-32" deep in multiple stages. Spacing of holes were 12"-16" apart. Some of the holes were drilled the recommended 1.5" diameter. Works great. Also tried drilling 1.25" diameter holes. Worked very good for me and sped up the project! I did fill one group of holes with Dexpan while it was raining. Bad idea. Water got into the filled holes and the Dexpan would not expand as designed! Keep area dry if you can and the more time you let the Dexpan " work" the better. Even after 24 hours it was still expanding a little.

I used this to break up red granite rock with mixed results. Because the rock was fully in the ground, it did not work as I had hoped for. Best results were with parallel holes drilled at 45 to 60 degrees toward each other making a vee. This allows the pressure to push a trough in the rock, which is what I wanted. In the end, I used a jack hammer for most of the work. It was worth the try.

I wanted to crack this large rock to make a bench. Drilled 12 holes, 2 feet deep, with a 3/4 bit. Very horizontal. I can normally fill 20 or so holes with one bag. I wanted to be there when it cracked so I drilled 10 more holes in between the holes and put in 10 wedges. And after less than 12 hours got a nice beautiful flat crack. Since then, it's continued to lift the rock.

The media could not be loaded. First time using this type of product wasn’t sure how it would go drilled 14 1.5 x 24 holes into a a boulder that has been next to my house for too long. We mixed 2 bags and filled 13 holes around 1 pm around 8 we had a few starting cracks by noon the next day it was busted video shows me barring it apart after 30 hours there is still cracks that will be useful after another treatment but I will move this rock out of the way first after using this I am going to drill my holes a bit closer to 16 apart than the 20 but I have access to a tractor I if you are using a wheel barrow I’d stay with the 12 and use more grout or you will be swinging a sledge

After drilling a stone following the directions to the letter placement of the cement and a little time and patience I was extremely satisfied with the results. Practice good safety protocols wear quality eye protection , gloves and skin protection this product works very well.

I had some giant rocks sticking out of my road and driveway. They were to large to excavate. Following the directions on this product l drilled holes 8 to 12 inches apart approximately 12 inches deep. Once l had approximately 9ft of holes to fill l mixed the Dexpan and poured it into the cleaned out holes. Cracks started to appear within just a few hours. After two days cracks were so large I could easily stick prybar into crack and remove rock as deep as holes that were drilled. Wish l had bought this year's ago. So quick and easy to use and worked better than l could have imagined. Thanks Dexpan! I will be buying more.