Expansive Demolition Grout 11 Lb. Bucket for Rock Breaking, Concrete Cutting, Excavating. Alternative to Demolition Jack Hammer Breaker, Jackhammer, Concrete Saw, Rock Drill (Type 2, 50-77° F)

I bought this product and was questionable about how effective it would be. I used it on a 30"x 60" concrete step that had been in place for approximately 54 years (no rebar). The videos I saw of how to use the product indicated you would see cracks appear anywhere from 4 to 6 hours. However, none appeared and when I looked out the next morning nineteen hours later there was still no signs of any expansion. Checking 4 hours later at the 24 hour mark as the directions indicate, still no cracks. I was very disappointed and tried to drag the block with my Kabota to no avail as it was just too large. I ventured out 7 hours later to see what my wife and her sister were up to and they indicated that indeed the steps had cracked in half. Bottom line, be patient. If you follow the directions with an eye on the temperature and I was right on the borderline of it being too cold, also the depth of my holes were a little short of what the directions call for....the product works wonderfully. I would highly recommend it. Always wear a dust mask as the powder is very fine and blows easily in the wind. Be sure to use the correct amount of water and clean up is also a breeze. I completed four holes approximately 18 inches deep and could have completed perhaps two more as a guess so make sure you have sufficient product for your job.

It worked as advertised. I would recommend using a powered mixing device. Be patient and let it work.

This product is incredible and a must-try! Dexpan demolished 6,000 psi CTS RapidSet 24/6 concrete with ease. The instructions recommend using 1 1/2" holes, but I achieved these results with 1-1/4" and 1" holes. Despite my shortcuts, Dexpan delivered outstanding results! I'm a huge fan of Makita, but their demolition hammers—specifically the Makita HM1203C 20 lb. SDS-MAX Demolition Hammer and the Makita HM1214C 27 lb. SDS-MAX AVT® Demolition Hammer—presented challenges. Although rated at 14 amps, they tripped a 20A circuit breaker. To avoid this, I ensured the demolition hammer was the only tool on the 20A circuit. Using demolition hammers can be labor-intensive, time-consuming, and requires multiple trips to Home Depot to rent the tools, which ate up even more time. For drilling, I used a low-powered Bosch Bulldog Xtreme to create the holes: a 3/4" pilot hole, followed by 1" and occasionally 1 1/4" holes. The instructions advise waiting 24 hours for the stone to cool after drilling, but I sprayed the holes with water to cool them immediately—just enough to darken the walls to a gray shade with a small amount of water pooling at the bottom. I mixed the Dexpan using a DeWalt cordless drill with a $6 paint mixer attachment in a e Home Depot 2 gal. Homer Bucket (RG502HD). The smaller bucket makes it much easier to pour the Dexpan into the holes. A funnel might be needed if you use a 5 gallon bucket. Twelve hours after pouring in the Dexpan, the concrete was shattered—I couldn’t believe it! The best part? The concrete broke into large, solid pieces for easy cleanup, and the Dexpan turned into a fine powder which was easily vacuumed up with a shop vac. I love Makita tools, but Dexpan really is a game changer.

Awesome, and saves your back.

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.

Works, just follow the directions. Even works with one inch holes. Expect some results in 24 hours. But, if you wait 48 or 72 hours it continues working and I got better results. Seems to work outside the temperature range as my temperatures varied from too low to too high for the ones I bought. Figure you might do about 15 holes with the 11 lb. size so you might consider buying the larger size because it might be cheaper in the long run.

So about a year ago, I get it in my head I really want to remove this boulder in my backyard, I go to Home Depot, rent a huge jack hammer and spent 10 hours straight chipping away at it almost to feel like I was getting nowhere. It turns out it was very hard granite and alas I was defeated, and kind of gave up altogether. Recently I had done some research and came across Dexpan and I must say, I was skeptical. So I ordered a bucket for $39 and luckily my old job let me borrow their combination rotary- jack hammer with an 1 3/8 bit. I had read they recommended 1 1/2 but I figured it couldn't be a big deal. I spent about 7-10 minutes a hole drilling holes 18 inches deep across the boulder about 9 inches apart until I figured I had it pretty much covered and then I watched the Dexpan video one last time. It was very straight forward, even down to the use three water bottles of water for one 11 lb bag. I mixed it all in a 5 gallon bucket and started pouring it in. I filled probably about 16 of the 21 holes I drilled and felt like an idiot because I was on the fence about ordering two buckets but I figured let's see if this works before I order another. I come back about 5 hours later, and I see nothing, no cracks, and now I'm thinking this was a total scam but I had to leave for work anyway so I'm like let's see how it looks in another 8 hours. I can't begin to describe how thrilled I was when I came home from work, there was giant cracks all over the boulder from the holes I had filled and I had to restrain myself from starting to pry at it because it says wait 24 hours. When that time finally did come, I went out there with a san angelo bar, and that boulder just started breaking apart at the seams. I've since ordered a second bucket and as I type this, I have fresh Dexpan in the rest of the holes and I'm waiting for it to break apart what's left of the once impenetrable rock.

Had a large granite boulder to split. It worked

Used successfully to break up some large boulders in the garden. Did require some hard work to drill the holes to accept the grout but got there in the end.

This stuff is incredible. I was skeptical at first but am very pleased. Tried it on a basketball sized rock in an annoying place on the driveway before I do my big project. Drilled a 4” deep x1 1/8” hole hoping to just blow the cap off the rock so I wouldn’t hit it with the tractor while snowblowing. Came back next day and it was in three chunks! Very pleased. Note that instructions recommend pouring it first thing in the morning, so it has a chance to work during its “critical eight hours“ during the heat of the day. I was too cheap to buy a 1 1/2” bit, got the 1 1/8” for half the price. Seems to be working fine in the limestone I am dealing with. VERY HAPPY with this product. It is allowing me to turn a skidder trail into a road passable by cars and minivans. I have fractured a couple rocks and carefully blown the top 8” slab off others just by changing my techniques. WISH I NEW ABOUT THIS STUFF YEARS AGO!?!?! Why doesn’t Dexpan tell people about their product. BE PATIENT! Results after 48 hrs is always better than 24

We expected to demolish the colomb fadter as show in the video but it give 10% only

I needed access to my foundation but I had a massive rock next to it (almost touching the wall). The part that is visible in the pictures that I needed to break was about to 2 feet high and slightly more than 3 feet wide. I tried everything I could think of but I only made a dent in it. I broke concrete before and it fells like butter compared to this rock. I saw the Dexpan product. I wasn't sure I really believed the results could be as good but it was my only option left. I ordered it on Amazon and the next day I rented a rotary hammer with a 1 3/8 x 18 inches drill bit (they didn't have the 1 1/2 as recommended by Dexpan). I drilled the rock and then I filled the holes with Dexpan around 7 PM. I was really anxious and the next morning, as soon as I woke up I got out to see the rock, afraid it would still be intact but a miracle happened, it was completely cracked. It was cracked all the way down to the bottom. If you follow the instructions it really works. Highly recommended product! 100% satisfied! Hopefully I won't need it again in the future but I need to, I will not hesitate to buy again.

I was seriously blown away by how well Dexpan Expansive Demolition Grout worked! I wasn’t sure what to expect, but even with just half-inch drilled holes, it still managed to split the rock apart with ease. Pros: ✅ Works Even with Small Holes – I only drilled ½-inch holes, and to my surprise, Dexpan still did the job. I thought I might need larger holes, but this stuff proved me wrong! ✅ Completely Silent & Controlled – Unlike using jackhammers or explosives, this method is completely non-explosive, making it a great option for controlled demolition. ✅ Doesn’t Require Heavy Machinery – If you don’t want to deal with expensive equipment, this is an excellent alternative. Just drill, mix, pour, and wait. ✅ Impressive Power – It took about a week to fully break the rock apart, but when it did, I was seriously surprised at how effective it was. ✅ Great for Future Use – After seeing the results, I’ll definitely be using this again for future rock and concrete removal projects. Cons: ❌ Takes Patience – This isn’t an instant process—it took about a week before the rock fully cracked apart. If you’re expecting immediate results, just keep in mind that it requires some waiting time. Final Verdict: If you need to break apart rock or concrete without heavy machinery or explosives, Dexpan is an absolute game-changer. Even with small drilled holes, it still worked incredibly well. It requires some patience, but the results are 100% worth it. Big win, and I’ll definitely be using it again!