Dexpan Non-Explosive Demolition Agent

by Archer USA / Dexpan USA

Product Description

PLEASE READ CAREFULLY. Dexpan has Amazing 18,000 PSI expansive strength when mixed with common water. Dexpan is easy to use, just mix with water, pour into holes, then Dexpan expands. Dexpan cracks reinforced concrete, limestone, marble and granite safely and quietly. Dexpan works without noise, vibration, dust by providing silent expansive cracking. It is safe to use, NO special permits, training or equipment needed. MSDS (Material Safety Data Sheet) is available upon request. Go to our website for more technical information, training video, usage instructions. Three easy steps to use Dexpan: 1st, Drilling. Holes should be drilled no further than 1 ft (30 cm) apart. Recommended hole diameter is 1.5 in (3.8 cm). Drill holes should be 80-90% of the depth, do not go through. 2nd, Mixing. In a bucket, combine 0.4 gallons (1.5 liters) of water with one 11 lbs (5 kilograms) bag of DEXPAN. Mix well, using a drill and paddle is recommended. 3rd, Filling: Clean holes before filling. DEXPAN slurry should be poured into holes within 10-15 minutes after mixing, only fill the holes about 1/2 to 1 inch (2.5 cm) from the top. Agitating the DEXPAN in the hole to make sure no air is trapped in holes. A grouting pump might be required to fill horizontal holes. Caps might be needed for horizontal holes. Coverage: Normally one 44 lb (20 kg) box of DEXPAN can fill up to 36 lineal feet (10 meters) of 1.5 inches (3.8 cm) diameter holes. You might not have to fill up every hole depending on application. Cracking or Cutting Time: Properly mixed, the cracks may appear after 2 hours of filling drilled holes, depending on ambient temperature, humidity, rock or concrete hardness. Cautions: A pair of safety glasses, rubber gloves and a dust-proof mask is required. After filling DO NOT look directly into the holes as to avoid any accident to be caused by blow-out. Keep DEXPAN in DRY storage. Select the correct type of DEXPAN for your temperature range.

Product Details

• Shipping Weight: 13 pounds (View shipping rates and policies)
• ASIN: B000BRQ9A2
• Item model number: Dexpan I, Dexpan II or Dexpan III
• Average Customer Review: 5.0 out of 5 stars  See all reviews (6 customer reviews)
• Amazon Best Sellers Rank: #42,421 in Home Improvement (See Top 100 in Home Improvement)
  • #3 in Home Improvement > Power & Hand Tools > Power Tools > Concrete Tools

Customer Reviews

Most Helpful Customer Reviews

4 of 4 people found the following review helpful:

5.0 out of 5 stars It came through when nothing else did, August 17, 2010

By 

A Bloke (London) - See all my reviews

Amazon Verified Purchase

This review is from: Dexpan Non-Explosive Demolition Agent (Misc.)

I decided to buy Dexpan to get rid of a 6tf wide, (don't know how deep) granite rock in the middle of my lawn I am extending. I tried sledge hammering (got rid of a bit but creates a MESS), shims and wedges (did nothing as I bought too small not knowing anything about them) and I really didn't want to rent a Jackhammer.

I bought Dexpan in a very hot summer week so I advised the customer service to send me #1. I rented a large hammer drill and a 1.5" bit from Homedepot for around $70 for 24 hours. I decided to drill LOTS of holes around 8" deep, not knowing how deep the rock is as I figured I had the drill and the more holes the better. Downside was it took me 7 hours with a few beer breaks. Be careful with it though if you've never used one before, at some points it's like riding a bull.

After finishing up drilling, I rushed the mixing and pouring process a little as I was losing light. The next morning I woke up to a surprise.. NOTHING! Instead the temperature had dropped to around 50 at night and 65 in the day. It looked a little dried out in the morning too so I poured more water on it. I didn't cover any of the holes to start. It then rained heavy for at least 12 hours so I gave it another day and checked it. I woke up to a surprise.. NOTHING!

At this point I wasn't going to give up - after all that drilling. The mix had poured out a bit over the rock but it was nice and wet so I covered the holes up with rocks. I left it over night and didn't dare look at it in the morning. After a day of 85 degrees and nice sun, I returned from work to a surprise.. CRACKS galore! I couldn't agree more with the posts about following the instructions and being patient, I think I would add be sure to get the right temperature Dexpan too, I'm SURE that made the difference to why it worked.

All in all due to the temperature & rain (i'm 99% sure) this took about 50+ hours to do it's thing but hang in there, it comes through if you're in the same boat! Great product!

2 of 2 people found the following review helpful:

5.0 out of 5 stars Dexpan Does the Trick, August 6, 2010

By 

Hayward Weaver - See all my reviews

Amazon Verified Purchase

This review is from: Dexpan Non-Explosive Demolition Agent (Misc.)

I had a large concret stoop outside of my back door that needed to be moved. My Case 580B would not move it, we tried a 30lb electric jack hammer, a concrete saw non of which would break-up the 80 year old concrete. Short of renting an 80lb pneumatic jack hammer at a cost of $200.00 for the weekend nothing I had would touch this block of concrete. My brother-in-law told me about the Dexpan product so i tried it. We dilled 6 holes into the block, mixed the Dexpan, and shoved it into the holes. The next day the block was broken into pieces that my backhoe could handle. The only thing about this product is there is not alot of working time from the time you mix it till it starts to get hot. My suggestion is to make sure you have a really good drill with a mixer paddel (not a grout mixer) or to mix just enough to do one hole at a time. Anyway 5 out of 5 stars this product is great i only wish i would have bought the 44lb box.

1 of 1 people found the following review helpful:

5.0 out of 5 stars It really works...., May 3, 2011

By 

L. RUGGIERO "LRCRUE 11" (CONNECTICUT) - See all my reviews
(REAL NAME)   

This review is from: Dexpan Non-Explosive Demolition Agent (Misc.)

I went round and round with this product before it finally worked. I had a piece of granite or bluestone peaking in my back yard which I just wanted to take the tip off so the rest could be buried. This rock was totally dense and had no veins to take advantage of. Whatever stone this was it could be compared to Kryptonite! I had an excavator try to dig it out and drop bolders on it, I believe it is part of the actual ledge in my back yard. Nothing worked. I had a jack hammer on the rock and it only dulled the tips. This rock was approx. 6ft by 3 ft sticking up about 1 ft high at the peak.
The first time around I rented a core drill with a 2in bit. I bored about a dozen holes in the rock about 8in deep and used only 1 bag of dexpan. After about 1 week the rock did crack but only half of it. I was able to clear away the debris but something more needed to be done. On my second attempt I rented an 1in 1/2 heavy duty hammer drill and added more holes to this monster rock. After smoking the bit I had some more holes for my new attack. I used two more bags of dexpan and after waiting a week I had some hairline cracks. At this point I rinsed off the rock and re-saturated the dexpan holes. I was able to get a couple pieces off but i think the water reactivated something, because the following day my hairline cracks were deep thick cracks which i was able to use a pry bar to pop off the 2nd half of the rock.
Either way this product seems to take a very long time but does work. As blasting was my next and last resort I glad I was able to do this myself. Between the dexpan and renting these tools I probably spent about 500 bucks getting this rock out.
P.S. Be careful using a core drill or hammer drill, with such a large bit it is easy to bind on the rock and break your hands. It was a total wresting matching getting so many large holes in such a heavy rock.