Dexpan Non Explosive Controlled Demolition Agent (44lb box) for Concrete Cutting, Rock Breaking, Excavating, Quarrying, Mining by Silent Cracking. Alternative to Blasting, Jackhammer, Diamond Blade Concrete Saw, Rock Drill, Demolition Hammer Breaker

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

• Product Dimensions: 15 x 11 x 7 inches ; 44 pounds
• Shipping Weight: 48 pounds (View shipping rates and policies)
• ASIN: B000BRPHQ4
• Item model number: type I: 77-104F, II: 50-77F, III: 23-50F
• Average Customer Review: 5.0 out of 5 stars  See all reviews (9 customer reviews)
• Amazon Best Sellers Rank: #40,805 in Home Improvement (See Top 100 in Home Improvement)

Customer Reviews

Most Helpful Customer Reviews

13 of 14 people found the following review helpful:

5.0 out of 5 stars Better than a jack hammer hands down!, August 19, 2007

By 

James M. Tetreault - See all my reviews
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Amazon Verified Purchase

This review is from: Dexpan Non Explosive Controlled Demolition Agent (44lb box) for Concrete Cutting, Rock Breaking, Excavating, Quarrying, Mining by Silent Cracking. Alternative to Blasting, Jackhammer, Diamond Blade Concrete Saw, Rock Drill, Demolition Hammer Breaker (Misc.)

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.

11 of 12 people found the following review helpful:

5.0 out of 5 stars Dexpan, May 29, 2007

By 

Paul Meiners - See all my reviews
(REAL NAME)   

This review is from: Dexpan Non Explosive Controlled Demolition Agent (44lb box) for Concrete Cutting, Rock Breaking, Excavating, Quarrying, Mining by Silent Cracking. Alternative to Blasting, Jackhammer, Diamond Blade Concrete Saw, Rock Drill, Demolition Hammer Breaker (Misc.)

Purchased this item to break a 1 foot thick concrete retaining wall. Bored 1 1/2" holes as prescribed, mixed and poured the Dexpan. Thought it was useless after waiting 6 hour for it to starting breaking the wall, on the 7th hour cracks developed, the next day the entire wall had broken up. Be patient, this stuff works, sure beats renting an air compressor/jack hammer.. so much easier. With a 90lb jack hammer this wall would have taken a day to demolish. Pre drill with a 1" bit, then with a 1 1/2", drilling took 4 hours for about 60 holes. Follow the instructions, great stuff
Paul Meiners

9 of 10 people found the following review helpful:

5.0 out of 5 stars Sometimes It Takes A Little Longer, February 24, 2009

By 

Randall R. Anderson (Napa, Ca USA) - See all my reviews
(REAL NAME)   

This review is from: Dexpan Non Explosive Controlled Demolition Agent (44lb box) for Concrete Cutting, Rock Breaking, Excavating, Quarrying, Mining by Silent Cracking. Alternative to Blasting, Jackhammer, Diamond Blade Concrete Saw, Rock Drill, Demolition Hammer Breaker (Misc.)

Like the other reviews I am thrilled with the results! I just wanted to add that you have to be patient and sometimes wait a little longer. I'm presently breaking some very very old foundations that are 2 ft. square. Several of the sections took 72 hours to crack. The quickest has been 30 hours. The neat thing is after the cracking, it just keeps expanding and increases the size of the cracks. I believe my increased time is a result of restraint, mix, and age of the concrete. Cracking always first goes to the free surface (dirt side) and finally cracks transverse which is the more restrained direction. I have been pretty careful with the mix. The point I wanted to make is don't give up if you don't see any cracking after a couple days. Sometimes it takes longer. I've used this stuff in the rain with no problems. To crack through my 2 ft. foundation I've gotten by with two holes. I prefer to drill five holes in a diamond pattern across the foundation, i.e., four corners and one center. That gives me lots of cracking to easily break out with a jackhammer and then cut rebar. I'd recommend you place the Dexpan about a week before your you start hammering. Also if you are new to drilling large concrete holes (1 1/2 in.) it is my opinion that pilot holes are pretty useless. To large a hole and the larger bit wanders and you get binding. Both drills will tend to follow different paths as they hit different hardness of aggregate. If your drill binds you can avoid injury to your wrist by not holding the D handle of your drill with an opposing thumb. Keep your thumb on the same side of the handle as your fingers. Then the drill will twist out of your hand and not twist your wrist.