Dexpan Expansive Demolition Grout 44 Lb. Box #2 (50F-77F) for Rock Breaking, Concrete Cutting Removal, Excavating. Alternative to Demolition Jack Hammer Breaker, Jackhammer, Concrete Saw, Rock Drill

I am using this product to trim back some rock outcroppings on my road, a project I have been attempting for years with hammer tools. Dexpan breaks the shale in slabs allowing more efficient hammer work. I like being able to remove material without the hazards and danger of explosives. Definitely wear a mask when mixing and make sure it is well mixed beforing pouring. Come back the next and enjoy the results.

i've only tried it once so far, but it does what it's supposed to do, although it took 3 days. if i remember right, the ratio came to .3 cups water : 1 cup of powder. the package only gives the water/bag of powder ratio.

Typical hammer drill will not give you the diameter and depth needed for using this product. Rented a demolition drill and purchased a new 1 1/4 inch concrete bit. Easily broke up the solid concrete and solid concrete plus rebar.

Worked great.

Results are not reliable.A strong young man with a jack hammer is the only way to break concrete.

I used this material to crack a 18" wide by 6'long wall that was buried in my front yard from a building that burn down years before. I dug 2' down on all sides and made 1.5" x 18" deep holes evey 8" down the middle of the wall. I mixed 3 bags of Dexpan (may have been able to do it with two) and filled the holes. Wihtin 4 hours parts of the wall began to crack and by the next morning the entire top could be scraped off with a loader/backhoe. I was sure easier to drill holes rather than run a 60# hammer all morning.

We took a chance with this product and didn't think it would work. We were wrong. Follow the directions and be patient. In the long run saved us money and broke that rock... a miracle, truly.

This is great stuff for removing concrete in bad places, ortrying save concrete next to what your taking out. Don't buytoo much, a little goes a long way. But its amazing stuff, andmake sure you watch the videos on website.