--- product_id: 350674163 title: "Expansive Demolition Grout 11 Lb. Bucket for Rock Breaking, Concrete Cutting, Excavating. Alternative to Demolition Jack Hammer Breaker, Jackhammer, Concrete Saw, Rock Drill (#1 (77-104 F))" brand: "dexpan" price: "¥43381" currency: JPY in_stock: true reviews_count: 6 url: https://www.desertcart.jp/products/350674163-expansive-demolition-grout-11-lb-bucket-for-rock-breaking-concrete store_origin: JP region: Japan --- # 18,000 PSI expansive force Silent, vibration-free demolition Cracks in 2-8 hours Expansive Demolition Grout 11 Lb. Bucket for Rock Breaking, Concrete Cutting, Excavating. Alternative to Demolition Jack Hammer Breaker, Jackhammer, Concrete Saw, Rock Drill (#1 (77-104 F)) **Brand:** dexpan **Price:** ¥43381 **Availability:** ✅ In Stock ## Summary > 💥 Break Ground Quietly, Lead Boldly. ## Quick Answers - **What is this?** Expansive Demolition Grout 11 Lb. Bucket for Rock Breaking, Concrete Cutting, Excavating. Alternative to Demolition Jack Hammer Breaker, Jackhammer, Concrete Saw, Rock Drill (#1 (77-104 F)) by dexpan - **How much does it cost?** ¥43381 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/350674163-expansive-demolition-grout-11-lb-bucket-for-rock-breaking-concrete) ## Best For - dexpan enthusiasts ## Why This Product - Trusted dexpan brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Efficient Coverage:** 11 lb bucket fills up to 9 linear feet of 1.5-inch holes for maximum reach. - • **Silent & Vibration-Free:** Demolish without noise or disruptive vibrations—perfect for urban or sensitive sites. - • **Simple 3-Step Application:** Drill, mix, pour—no heavy machinery or jackhammers needed. - • **Temperature-Specific Formula:** Choose the right mix for your rock or concrete temperature to optimize results. - • **Powerful 18,000 PSI Expansion:** Unleash controlled force that shatters concrete and rock effortlessly. ## Overview Dexpan Expansive Demolition Grout is a high-performance powder that generates an impressive 18,000 PSI expansive force when mixed with water. Designed for silent, vibration-free breaking of reinforced concrete and rock, it offers a safer, quieter alternative to traditional jackhammers and saws. The 11 lb bucket covers up to 9 linear feet of 1.5-inch diameter holes, with a simple 3-step process: drill, mix, and pour. Ideal for professional demolition projects requiring precision and minimal disruption. ## Description Concrete demolition and rock breaking has never been easier with Dexpan Expansive Demolition Joint. Dexpan is a powder with an incredible expansive force of 18,000 PSI when mixed with water. Poured into drilled holes, Dexpan can break up concrete and stone safely and quietly, while providing quiet cracking. It is safer, easier and more cost effective. Note 1 Not recommended for concrete slabs less than 6 inches deep. Note 2 You get a 5 kg. Dexpan bucket fills up to 9 linear feet of 1.5 inch diameter holes. Note 3 Choose the correct type of Dexpan based on the rock concrete temperature. Please read carefully before use Always wear safety glasses, rubber gloves, dust mask How to use Dexpan Step 1 Drilling: Use a 1.5 drill bit, holes should be drilled 30cm apart. 80 90% depth, do not pass through. STEP 2 Mixing: In a bucket, mix 1.5 liters of water with 1.5 kg. 5 kg. Backpack. Mix well with a slurry. Step 3 Filling: Warning: Using Dexpan in extremely hot temperatures could cause breakouts. Dexpan paste should be poured into the holes within 10 15 minutes after mixing. Coverage: normally 5 kg. 5 kg. The bag can fill up to 9 linear feet . Step 4 Cracking or Breaking Time: Properly mixed, cracks may appear after 2 8 hours. Wait 24 hours for best results. WARNING Important Safety Precautions and First Aid: 1 Safety glasses, rubber gloves and dust mask are required. 2 Caution Explosions may occur. Do not look directly into the filled holes. 3 Do not breathe dust. Avoid contact with eyes and skin. In case of contact with eyes or skin, rinse immediately with plenty of water and consult a doctor. 4 Store the bag in a dry place. Close the box bag after use. 5 Keep out of reach of children and pets. 6 MSDS is available upon request. ## Features - Concrete Demolition and Rock Breaking has never been EASIER! 3 Easy Steps to use: Drill, Mix, Pour. - Amazing 18,000 PSI expansive strength when mixed with water. Cracks according to drilling patterns. - Dexpan breaks Reinforced Concrete & Rock WITHOUT Noise, Vibration! SILENT Controlled Demolition. - Hundreds Job photos! Alternative to demolition hammer breaker, diamond blade gas saw, jackhammer - 11 Lb. Bucket fills up to 9 linear ft. of 1.5 in. diameter holes. Choose Rock / Concrete Temperature ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B00ET9OVW6 | | Best Sellers Rank | 283,285 in DIY & Tools (See Top 100 in DIY & Tools) 296 in Concrete Tools | | Brand | Dexpan | | Colour | clear | | Compatible Material | Stone, concrete cast, rock | | Customer Reviews | 4.2 4.2 out of 5 stars (283) 4.2 out of 5 stars | | Included Components | Blade | | Item Dimensions | 20.3 x 20.3 x 20.3 centimetres | | Item Form | Powder | | Item Weight | 11 Pounds | | Manufacturer | Archer USA | | Manufacturer Part Number | DEXPAN11BKT1 | | Material | Dexpan powder | | Model Number | DEXPAN11BKT1 | | Number Of Items | 1 | | Number Of Packs | 1 | | Style Name | Compact | | Surface Recommendation | Concrete | | Upc | 810684020009 | | Water Resistance Level | Not Water Resistant | ## Product Details - **Brand:** Dexpan - **Item dimensions L x W x H:** 20.3 x 20.3 x 20.3 centimetres - **Item weight:** 11 Pounds - **Material:** Dexpan powder - **Style:** Compact ## Images ![Expansive Demolition Grout 11 Lb. Bucket for Rock Breaking, Concrete Cutting, Excavating. Alternative to Demolition Jack Hammer Breaker, Jackhammer, Concrete Saw, Rock Drill (#1 (77-104 F)) - Image 1](https://m.media-amazon.com/images/I/71Dxzh3ZBmL.jpg) ![Expansive Demolition Grout 11 Lb. Bucket for Rock Breaking, Concrete Cutting, Excavating. Alternative to Demolition Jack Hammer Breaker, Jackhammer, Concrete Saw, Rock Drill (#1 (77-104 F)) - Image 2](https://m.media-amazon.com/images/I/71qSRph1y-L.jpg) ![Expansive Demolition Grout 11 Lb. Bucket for Rock Breaking, Concrete Cutting, Excavating. Alternative to Demolition Jack Hammer Breaker, Jackhammer, Concrete Saw, Rock Drill (#1 (77-104 F)) - Image 3](https://m.media-amazon.com/images/I/81tFAR-KN3L.jpg) ![Expansive Demolition Grout 11 Lb. Bucket for Rock Breaking, Concrete Cutting, Excavating. Alternative to Demolition Jack Hammer Breaker, Jackhammer, Concrete Saw, Rock Drill (#1 (77-104 F)) - Image 4](https://m.media-amazon.com/images/I/81JUIA8UVBL.jpg) ![Expansive Demolition Grout 11 Lb. Bucket for Rock Breaking, Concrete Cutting, Excavating. Alternative to Demolition Jack Hammer Breaker, Jackhammer, Concrete Saw, Rock Drill (#1 (77-104 F)) - Image 5](https://m.media-amazon.com/images/I/512I2j+SnhL.jpg) ## Available Options This product comes in different **Pattern Name** options. ## Questions & Answers **Q: What type of drill is best? i used my bosch 8.5 amp hammer drill with a 1” bit. it lasted 10 minutes and shut down.** A: I used a rather large hilti drill for mine with a 1.5" bit and even that thing was very hot to the touch after two 16" deep holes. I would do a few then let it cool. I'd say that drill is a good drill for most things but not for a 1" drill that's over 9" long. **Q: Can you drill smaller than 1.5 inch holes in the concrete? I have a 1 inch drill bit - hence the question.** A: You can use smaller holes, many clients including our own staff have had much success both with smaller and larger holes, however, the holes need to be closer together, no more than 6" apart and you must allow more time, we cannot guarantee the timing or results if you use anything smaller or bigger. Thank you for the great question! **Q: I have a boulder 8' wide by 5 ' tall , will this work on it? And how far apart should i drill the wholes** A: Wow that’s a big rock, mine was 1 1/2 feet tall and 3ft wide. I drilled 1” diameter holes 1 ft deep and 6-8” apart and it worked great over night. It says not to drill all the way through and about 1ft apart in a grid pattern. Good luck. **Q: Can I just pour it into cracks of the big rocks and not drill holes** A: I think it would work fine, efficiency would depend on depth and width of the crack versus the size of the rock. You'll need to dam the crack to contain it in the area you want to expand in. It is very runny when mixed and you do need to follow mixing and safety instructions. After the reaction takes place ( a day or so ), the stuff is as inert as limestone so no hazard that I am aware of. The primary ingredient is Slacked Lime & the Romans used it in cracks to break rocks for building roads so the history is extensive. I have some photos of concrete breaking that I did with it and I wish I could share them. Try mail to toymkr at a o l dot c ## Customer Reviews ### ⭐⭐⭐⭐ Breaking Boulders *by on Reviewed in the United Kingdom 28 March 2026* 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. ### ⭐⭐⭐⭐⭐ Great product!! Impressed!! *by on Reviewed in Canada 18 July 2020* Really impressed with the product considered I was skeptical. I had a fairly large granite Rock that I have been wanting to get rid of for years but it was much to heavy to move. Tried drilling holes in it, used a concrete saw to cut into it .. for the life of me I could not break it down into smaller pieceS due to its size.This product did what I couldn’t do within 24hrs. A little pricy but considering it resolve a long due problem for me worth every penny. Amazing and thank you for the great product. I showed my parents and friends and my dad has already purchased and used it on some large rocks at the cottage he wanted gone. Works there as well. MAKE sure to follow instructions exactly as described. In my cases I divided the volume into 3 so I gave myself 3 attempts to achieve what I needed since I had more than I needed for my rocks. It did the jump 1st time around... used a second batch to break down the rock even more... all I can saw is amazing :) ### ⭐ dosent work as expected *by on Reviewed in the United Arab Emirates 1 May 2023* We expected to demolish the colomb fadter as show in the video but it give 10% only ## Frequently Bought Together - Dexpan Expansive Demolition Grout 11 Lb. Bucket for Rock Breaking, Concrete Cutting, Excavating. Alternative to Demolition Jack Hammer Breaker, Jackhammer, Concrete Saw, Rock Drill (Type 1, 77-104° F) - Sabre Tools 1 Inch x 12 Inch SDS Plus Rotary Hammer Drill Bit, Carbide Tipped for Brick, Stone, and Concrete Version 2 (1" x 10" x 12") --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/350674163-expansive-demolition-grout-11-lb-bucket-for-rock-breaking-concrete](https://www.desertcart.jp/products/350674163-expansive-demolition-grout-11-lb-bucket-for-rock-breaking-concrete) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-16*