The Product
A dry, water-activated powder engineered to fracture rock and concrete from drilled boreholes — without explosives.
What Is It
Crackstone is a dry, water-activated expansive powder. Mixed with water and poured into a drilled borehole, it expands gradually — building enough pressure to split the surrounding rock or concrete along the line of holes. No fuse, no flame, no shockwave.
It's used for rock breaking, boulder splitting, quarrying, concrete demolition, and excavation — anywhere a job needs rock removed but blasting isn't permitted or practical.
How It's Made
Calcium-oxide-based mineral compounds, sourced and graded for purity.
Milled to a controlled particle size — the single biggest factor in reaction timing.
Blended in batch to the documented pressure and timing profile for each category.
Every batch is lab-tested against spec before it's released to ship.
Crackstone is manufactured from calcium-oxide-based mineral compounds, milled to a controlled particle size and blended under quality control. Every production run is tested against its published specification before release, so reaction timing and expansive pressure stay consistent from batch to batch.
Powder Categories
Reaction speed is sensitive to ambient temperature, so Crackstone ships in three grades. Tap a card for full specifications.
Placeholder categories shown — exact names and specifications can be customized to match your product line.
Buy Now
Choose your powder grade and packaging size. Contact us to confirm pricing, shipping, and delivery to your site.
5 kg
For cooler sites (5°C–20°C). Ideal for winter works and early-morning pours.
Contact for Price
Buy Now5 kg
Standard grade for everyday rock breaking (20°C–35°C ambient).
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Buy Now20 kg
Bulk pack for quarry and mining operations with consistent demand.
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Buy Now5 kg
Slowed reaction for hot climates (30°C and above).
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Buy NowNeed bulk pricing or distributor terms? Request a quote
Technical Specifications
| Form | Dry powder, water-activated |
|---|---|
| Expansive pressure | Up to 8,000 psi (≈ 55 MPa) |
| Reaction onset | 15–45 minutes (temperature-dependent) |
| Full fracture window | 1–24 hours (temperature-dependent) |
| Recommended hole diameter | 32–50 mm |
| Recommended hole spacing | 200–500 mm, material-dependent |
| Working temperature range | 5°C to 35°C ambient |
| Packaging | 5 kg / 20 kg sealed containers |
| Shelf life (sealed, dry storage) | 24 months |
| Classification | Non-explosive expansive compound |
Figures vary by powder category — see individual category specs above for exact ranges.
Product Advantages
Safety Guidelines
Crackstone removes explosives risk, not site risk in general. Wear standard PPE (eye protection, gloves, dust mask while mixing), keep the area around an active borehole clear, and follow the full safety data sheet shipped with every order.
Catalogue & Downloads
Every powder category, technical specification, and safety guideline in a single downloadable catalogue — open a preview or download it directly.
Tell us about your rock or concrete removal project and our technical team will recommend a hole pattern, quantity, and timeline.
