Model # DEXPAN44BOX2

Internet #204378786

Dexpan 44 lb. Box Type 2 (50F-77F) Expansive Demolition Grout for Concrete Rock Breaking and Removal


44 lb. Box Type 2 (50F-77F) Expansive Demolition Grout for Concrete Rock Breaking and Removal

$99.99 /each

Frequently Bought Together

Product Overview

Concrete demolition and rock breaking has never been easier with Dexpan Expansive Demolition Grout. Dexpan is a powder with amazing 18,000 psi expansive strength when mixed with water. Poured into drilled holes, Dexpan can break concrete and rocks safely and quietly, while providing silent cracking. It is safer, easier and more cost effective.

  • Amazing 18,000 psi expansive strength when mixed with water breaks reinforced concrete, granite, marble, limestone and other non-porous rocks
  • 3-easy steps to use: drill, mix and pour, to ensure success, watch instruction video before use
  • Cracks according to designed drilling patterns for controlled demolition and easy clean up
  • An alternative to blasting, hydraulic breakers and jackhammers, which is safer and efficient, works without noise, vibration or dust by providing silent expansive cracking
  • Non-toxic material, SDS (safety data sheet) is available upon request
  • 3 types of Dexpan, this is type 2 (for rock or concrete temperature 50F-77F)
  • 44 lb. box (Includes four 11 lb. plastic bags)
  • Fills up to 35 lin. ft. (10 m) of 1.5 in. (3.8 cm) Dia holes
  • Not recommended for concrete slab less than 6 in. in depth
  • Give it 24-hours for best results
  • Safety goggles, rubber gloves, dust mask is required

Info & Guides

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Warranty / Certifications

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Customer Questions & Answers

Can I use dexpan to remove 2" of decorative concrete in the middle of stoop treads on concrete slab?

Can I drill less than 1.5" holes for dexpan?
Asked by: Vonny
You can use it. I'm sure that it will be strong enough. But since you are working in the middle of an area, the outward expansion might damage more than you want. The 1.5" hole will become about 2.5" over time. If its a weak material, you can probably go smaller holes, but not much smaller. It works using pressure which uses Pounds per square Inch. You need square inches.
Answered by: Matteo92065
Date published: 2017-03-22

do you have the certificate of chemical analysis for the dexpan?

i do no t kwow where to look for it
Asked by: eduardo
you would have to go to the maker for that and think about you are asking for it .
Answered by: DaveK
Date published: 2017-01-02

How many holes will a 44 pound bag do at 18 inches deep

Asked by: Chad
I was able to fill twelve 1" diameter holes at 18" with one 11 lb bag.
Answered by: Nick
Date published: 2017-03-18

if I use dexpan will the boulder break itself off and roll or just remain with cracks for removal?

Asked by: Phil
I was breaking apart concrete on fairly level ground. Dexpan cracked the slabs but it did not push the pieces far enough apart that they rolled off or fell away from each other. using a 2' prybar the pieces were easy to separate along the cracks.
Answered by: Nick
Date published: 2017-03-07
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Customer Reviews

44 lb. Box Type 2 (50F-77F) Expansive Demolition Grout for Concrete Rock Breaking and Removal is rated 4.7 out of 5 by 52.
Rated 5 out of 5 by from This is a great product. The box contains four, 11lb bags. I was drilling 1.5" holes, 18" deep.... This is a great product. The box contains four, 11lb bags. I was drilling 1.5" holes, 18" deep. Each 11lbs bag would fill just about 6 holes. I'm breaking up large blue granite boulders that are still in the ground, and Dexpan has been able to fracture these no problem. You can even go much larger than the suggested spacing, but the individual pieces get larger. Fractures start as early as 24 hours, but I find that if you wait a full week, the gaps become larger, and make removal/separation easier.
Date published: 2017-03-21
Rated 5 out of 5 by from I used this to demolish a fresh water cistern in... I used this to demolish a fresh water cistern in my basement that was poured of portland cement that a 60lb hammer would not break.It does take 24 hours to cure.Following the directions exactly provided excellent results, breaking the cement to bits.I recommend this product for excellent results.
Date published: 2017-03-27
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2017-04-23
Rated 4 out of 5 by from After tearing down an 85' x 30' shed I was faced with breaking up 3' x 2' concrete stem walls. Sl... After tearing down an 85' x 30' shed I was faced with breaking up 3' x 2' concrete stem walls. Sledgehammer did the trick breaking up a little less than half. The other half was so hard I could do little more than chip it with a 16 lb sledgehammer and in the process of drilling I broke two 1" SDS+ bits. It took almost 1 week for the Dexpan to pop apart the two "test" slabs I had drilled. This was likely due to user error. I poured the Dexpan during a stretch of 30 degree days. What I did not see in my initial reading of the directions is the operating temperature range is the temperature of the stone, not the atmosphere. Thinking it had failed and being short on time I purchased 3 sets of wedges and feathers to complete the job. Much to my surprise upon arriving at the job site a week later the first two blocks had finally cracked. A little work with a prybar to pull the pieces apart was all it took. The product shipped as four 11 lb bags which in turn were in a larger bag. My only complaint is the 11lb bags are fairly weak. One bag had burst during shipping. Were it not for the second, heavier bag, I would have had to write off 11lbs. Easy to use, requires a fair amount of patience (especially if you make the mistake I did), and gets the job done.
Date published: 2017-03-07
Rated 5 out of 5 by from Dexpan Expansive Demolition Grout I purchased this product here in the USA to be used on a renovation job in the Caribbean (not sold there). It worked great but don't try to pack in your carry-on. Also you need to check the (temperature TYPE) rating depending on where you will be using it. Follow instructions on how it works as you should. Main thing to remember is giving free space for the product to do its job (expand). Additional holes or digging around rock is very helpful. Get enough of the material as it doesn't go very far. I used 8 11# bags in about 200+ holes 1" 1/2w x 9-10'' deep. In the end - this product works GREAT!! Reduces hours upon hours of jackhammering.
Date published: 2015-11-03
Rated 5 out of 5 by from Dexpan type 3, excellant product Dexpan is easy to use, great for breaking rock and concrete down to manageable size that can be moved by hand when it is not cost effective to bring in large equipment to accomplish your home project.
Date published: 2016-06-21
Rated 4 out of 5 by from Good Alternative to Jackhammer rental I bought this to remove some solid concrete front steps (the top platform was 3ft wide and about 2.5ft tall). that had developed a bad crack on the bottom. I'm replacing them with a small wood deck. Renting a hammer drill (with an 1.5" SDS-Max or spline bit) is generally much cheaper then renting a jackhammer, and drilling the holes was less work (still work, but not as hard). Combined cost of this box + hammer drill rental ended up being about 1 day of jack hammer rental (jackhammers work good on flat surfaces that crack all the way through like driveways (up to about 6" deep), but breaking up a big block of concrete with one is a lot of work). Another option is to rent a bobcat with a mini-crane and pull it out in one piece but that would probably be more $. Do the Math to figure out what works best for you. You could theoretically use a hammer drill with a hammer/chisel bit (would be easier to wield on a big block then a jackhammer), But that still seems like a lot of work to me. Might be cost effective if you buy the drill and have lots of time. Also determine how you plan to get rid of the concrete before hand. Most yards charge by the ton or by the load. You can also rent a roll off dumpster in some cases. Each bag filled about 7-8 1.5" holes drilled about 15" deep. this kit has 4 bags. The holes should be drilled no more then 1 foot from the edge of the piece, or from another hole. Drill pattens are available online. The instructions say it takes 24 hours to fully harden/crack, but i found that for the cracks to fully develop it takes about 72 hours. This could just be due to the cold weather (make sure you buy the correct type (1,2, or 3) based on the ambient temp). The speed is also dependent on a bunch of other things like humidity. My advice if you don't see results is to just wait longer. They also have a support number that is helpful and informative and instructional videos on Youtube in addition to the instructions on the box and on each bag. usually if you see a hairline crack within 6-12 hours it will become a .5-1" crack by time it is done working. drill 90% of the way through the piece. leave about 1" at the top of the hole (do not overfill, although i did overfill a couple accidently, and it still worked). Additional tools/supplies needed are a plastic bucket for mixing (i used one with a spout so that i didn't need a funnel), A mixing drill/drill bit (they say you can mix by hand, but mixing it, even with the drill, took some time as there is a lot more powder then water), and something that will measure 1.5 liters. They say you should vacuum/blow out out any dust left in the hole, also use a stick to remove bubbles. I didn't do either and it worked. but if you want to you do that you will need a vacuum or an air compressor with blow gun attachment. You can probably use the stick side of the mixer to remove the bubbles.
Date published: 2013-11-07
Rated 5 out of 5 by from Dexpan is a great alternative to other demolition Not able to break up cement foundation after trying impact hammer, sledge hammer and front loader. While looking for a reasonable alternative, I came across Dexpan! Drill a few holes, fill with Dexpan ..... sit back and wait. I was pleasantly surprised at how well this product worked. Cement foundation cracked in to smaller pieces overnight, most pieces were removable with no further work. Great Stuff!!
Date published: 2016-06-14
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