EXPANDAG™ Expansive Mortar is a powdery chemical agent that swells with immense force when mixed with water. It is the preferred choice for controlled rock breaking and concrete demolition without the dangers of explosives.
Commonly known as Stone Cracking Powder, Rock Breaking Chemical, or Silent Rock Splitting Powder, our HSCA is customized to match your local project temperature for maximum efficiency.
120 MPa Expansion Power: Engineered for the hardest granite and reinforced concrete.
Safe Alternative to Blasting: No fly-rock, no vibration, and no toxic fumes.
No License Needed: Easy storage and transportation compared to explosives.
When mixed with water and poured into boreholes, HSCA generates an expansive stress of 100-123 MPa, creating a controlled fracture pattern to break rock from within.
Granite, marble, and limestone quarrying.
Concrete demolition in urban residential areas.
Bridge pillar removal and underwater rock breaking.
| Model | Range | Market Recommendation |
|---|---|---|
| HSCA-1 | 25°C – 40°C | Summer / Middle East / India |
| HSCA-2 | 10°C – 25°C | Standard Spring and Autumn |
| HSCA-3 | -5°C – 10°C | Winter / North America / Europe |
| Hole Diameter | Spacing | Consumption (kg/m) |
|---|---|---|
| 38 mm | 30-50 cm | 2.0 kg |
Standard export packaging: 20kg per carton (5kg x 4 vacuum bags). Shelf life: 1 year in dry conditions.
Q: How long does it take for the cracking powder to work?
A: Cracking typically begins in 2-8 hours. The total expansion pressure peaks within 24 hours. Results vary by rock hardness and ambient temperature.
Q: Can I use HSCA for underwater demolition?
A: Yes. Special underwater versions are available. We recommend using cartridge packaging for sub-surface work to ensure the mortar reacts without being diluted by water.
Q: What is the main cause of blow-outs?
A: Blow-outs usually happen when the HSCA version is too reactive for the current temperature. Always use the correct model (HSCA-1 to 3) and cold mixing water in hot climates.
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